Updated on 2023/06/01

 
TOKUNAGA Tatsuya
 
Scopus Paper Info  
Total Paper Count: 0  Total Citation Count: 0  h-index: 2

Citation count denotes the number of citations in papers published for a particular year.

Affiliation
Faculty of Engineering Department of Materials Science
Job
Professor
E-mail
メールアドレス
External link

Research Interests

  • phase equilibria

  • phase transformation

  • phase diagrams

Undergraduate Education

  • 1994.03   Nagoya University   Faculty of Engineering   Graduated   Japan

Post Graduate Education

  • 2004.09   Kyushu Institute of Technology   Graduate School, Division of Engineering   Doctoral Program   Completed   Japan

  • 1996.03   Nagoya University   Graduate School, Division of Engineering   Master's Course   Completed   Japan

Degree

  • Kyushu Institute of Technology  -  Doctor of Engineering   2004.09

  • Nagoya University  -  Master of Engineering   1996.03

Biography in Kyutech

  • 2023.04
     

    Kyushu Institute of Technology   Faculty of Engineering   Department of Materials Science   Professor  

  • 2014.04
    -
    2023.03
     

    Kyushu Institute of Technology   Faculty of Engineering   Department of Materials Science   Associate Professor  

Biography before Kyutech

  • 2011.04 - 2014.03   Kagoshima University   Associate Professor   Japan

Papers

  • 急冷凝固したFeCoNiCrBSi合金におけるミクロ組織とガラス形成 Reviewed

    張 亦成, 徳永 辰也

    材料   72 ( 3 )   231 - 233   2023.03

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    Authorship:Corresponding author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)

    DOI: 10.2472/jsms.72.231

  • α鉄におけるホウ素,炭素の粒界偏析に及ぼす合金元素の影響 Reviewed

    徳永 辰也 , 元村 優太, 恵良 秀則, 土山 聡宏, 菖蒲 一久, 長谷部 光弘, 大谷 博司

    鉄と鋼   109 ( 3 )   158 - 166   2023.03

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)

    DOI: 10.2355/tetsutohagane.TETSU-2022-081

  • Microstructure control and its observation of rapid solidification Cu–La alloy for the development of fluoride-ion batteries Reviewed International journal

    S. Zhu, H. Akamine, Y. Nagahata, T. Tojigamori, H. Miki, Y. Zhang, T. Tokunaga, S. Iikubo

    Journal of Alloys and Compounds   930   167447   2023.01

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    Language:English   Publishing type:Research paper (scientific journal)

    DOI: 10.1016/j.jallcom.2022.167447

  • Thermodynamic calculation of phase equilibria in the Al-Fe-Zn-O system Reviewed International journal

    Matsumoto N., Tokunaga T.

    High Temperature Materials and Processes   41 ( 1 )   605 - 620   2022.12

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)

    DOI: 10.1515/htmp-2022-0249

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  • Investigation of Nanoscale Phase Formation in Rapidly Solidified Fe20Co20Ni20Cr20B20−xSix Alloys Reviewed International journal

    Zhang Yicheng, Inoue Koji, Ishimaru Manabu, Tokunaga Tatsuya, Era Hidenori

    MATERIALS TRANSACTIONS ( The Japan Institute of Metals and Materials )   63 ( 9 )   1211 - 1216   2022.09

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)

    <p>In this study, nanoscale phase formation in rapidly solidified Fe<sub>20</sub>Co<sub>20</sub>Ni<sub>20</sub>Cr<sub>20</sub>B<sub>20−</sub><i><sub>x</sub></i>Si<i><sub>x</sub></i> alloys was investigated using atom probe tomography (APT) and transmission electron microscopy (TEM). According to previous X-ray diffraction measurements and scanning electron microscopy with energy-dispersive X-ray spectroscopy results, it was thought that this alloy system was composed of almost a single face-centered cubic (FCC) solid solution phase when the Si content was 5 at.%. However, APT and TEM results at the nanoscale showed that both an FCC solid solution and compound phases formed for all alloy compositions. The rapidly solidified alloy ribbon with a Si content of 5 at.% showed the presence of nanoscale FCC and Cr<sub>2</sub>B phases. Furthermore, in addition to the nanoscale FCC and Cr<sub>2</sub>B phases, a nanoscale Cr<sub>3</sub>Ni<sub>5</sub>Si<sub>2</sub> phase was observed when the Si content exceeded 7.5 at.%.</p>

    DOI: 10.2320/matertrans.mt-m2022058

    CiNii Research

  • 鋼中における溶質元素の粒界偏析の熱力学的評価 Invited

    徳永辰也

    フジコー技報 ( 株式会社フジコー )   29   6 - 10   2021.12

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  • Fe20Co20Ni20Cr20B20-xSixハイエントロピー合金の形成相に及ぼす冷却速度の影響と加熱による相変態挙動 Reviewed

    張 亦成, 徳永 辰也, 恵良 秀則, 菖蒲 一久, 長谷部 光弘

    鋳造工学 ( 日本鋳造工学会 )   93 ( 9 )   532 - 540   2021.09

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    Language:Japanese   Publishing type:Research paper (scientific journal)

    DOI: 10.11279/jfes.93.532

  • α鉄中における窒素の粒界偏析に及ぼす合金元素の影響 Reviewed

    元村 優太, 徳永 辰也, 恵良 秀則, 菖蒲 一久, 長谷部 光弘, 大谷 博司

    熱処理 ( 日本熱処理技術協会 )   61 ( 3 )   119 - 125   2021.06

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    Language:Japanese   Publishing type:Research paper (scientific journal)

    DOI: 10.14940/netsushori.61.119

  • 溶湯浸透法によって作製したSiC二段反応焼結体の摩耗特性 Reviewed

    花田喜嗣, 肖陽, 徳永辰也, 恵良秀則

    鋳造工学   92 ( 9 )   469 - 476   2020.09

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  • Rapid fabrication of the continuous AlFeCrCoNi high entropy alloy coating on aluminum alloy by resistance seam welding Reviewed

    Zhao D., Yamaguchi T., Shu J., Tokunaga T., Danjo T.

    Applied Surface Science   517   2020.07

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    The continuous AlFeCrCoNi high entropy alloy coating was firstly fabricated on aluminium alloy by resistance seam welding. During welding, the coating was formed rapidly under the effect of instantaneous joule heating and the pressure. The gradient temperature transformed the nanocrystalline AlFeCrCoNi powder into the AlFeCrCoNi HEA coating consisted of body-centered-cubic and face-centered cubic structures. According to the calculation and experimental results, the welding process was not brought the negative affect to the substrate and only a certain amount of aluminum element penetrated into the coating. The average thickness and hardness of the coating were 420 µm and 715HV , respectively. Compared to A6061, the coating exhibited excellent wear-resistance in dry, deionized water and 3.5 wt% NaCl solution conditions. The environment played an important role in the wear behaviour of the AlFeCrCoNi HEA coating. Meanwhile, the corrosive wear of the AlFeCrCoNi HEA coating was proved to be beneficial to reduce the wear rate. 0.2

    DOI: 10.1016/j.apsusc.2020.145980

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  • Effect of Fe-Si Alloy Composition on Mechanical Properties and Electrical Resistivity of Sintered SiC Ceramics Fabricated by Melt Infiltration Method Reviewed

    Hanada Yoshitsugu, Sho Yo, Yamamoto Atsuo, Tokunaga Tatsuya, Era Hidenori

    Journal of Japan Foundry Engineering Society ( Japan Foundry Engineering Society )   92 ( 1 )   8 - 15   2020.01

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    <p>  The authors have been investigating a fabrication method to obtain high performance SiC ceramics by two-step reaction sintering using a Fe-Si alloy that is well known as an inoculation agent. In this study, compositions of C as a constituent of first-sintered body and the Fe-Si alloy as a constituent of molten infiltration alloy for the second sintering were changed for SiC ceramics fabrication. The second-sintered body was fabricated by infiltrating the Fe-Si molten alloy into the porous first-sintered body at 1723 K for 6 h under a pressure lower than 10<sup>-2</sup> Pa. The C content for the first sintered body was changed from 0 to 28 mass%, whereas the Fe concentration of the alloy for infiltration was changed from 0 to 66 mass%. Microstructure observation, elemental distribution measurements of Fe and Si, and phase identification for obtained second-sintered specimens were conducted using a laser microscope, EPMA, and XRD, respectively. Hardness and fracture toughness were evaluated by results of micro Vickers hardness testing. The electrical resistivity was measured using the four-terminal method.</p><p>  The microstructure of sintered SiC changed with the Fe content of the infiltration alloy, whereas the generated amount of SiC changed only slightly irrespective of the Fe content. No Fe carbide formation was observed, but FeSi<sub>2</sub> and FeSi phases were formed at high Fe contents. The fracture toughness of sintered bodies improved to 5.9 MPa·m<sup>0.5</sup> at maximum by the increase in the C content of the first sintered body and the Fe content of the infiltration alloy, although the electrical resistivity was reduced to 1.5 × 10<sup>-5</sup> Ωm at the minimum by the increase in Fe contents. Consequently, the fracture toughness of the Fe-Si alloy infiltrated SiC improved by two times compared to the conventionally sintered SiC ceramics. Furthermore, the electrical resistivity of the SiC sample largely decreased by one digit or more. It is considered that the superior characteristics are brought about by the extensive formation of finely distributed FeSi<sub>2</sub> and FeSi phases.</p>

    DOI: 10.11279/jfes.92.8

    CiNii Article

    Other Link: https://ci.nii.ac.jp/naid/130007793406

  • Silicon Carbide Fabrication by Infiltration of Molten Fe-Si Alloy Through Two-Step Reaction Sintering Reviewed International journal

    Yoshitsugu Hanada, Yang Xiao, Akio Sonoda, Hyo-Gyoung Kang,Hideaki Nagayoshi, Atsuo Yamamoto, Tatsuya Tokunaga

    Archives of Metallurgy and Materials   64 ( 4 )   1645 - 1652   2019.12

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    DOI: 10.24425/amm.2019.130139

  • Fabrication and Mechanical Properties of Reaction Sintered SiC Ceramics by Infiltration of Fe-75%Si Alloy Melt Reviewed

    Hanada Yoshitsugu, Sho Yo, Yamamoto Atsuo, Tokunaga Tatsuya, Era Hidenori

    Journal of Japan Foundry Engineering Society ( Japan Foundry Engineering Society )   91 ( 10 )   710 - 716   2019.10

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    <p>  Structure and mechanical properties of SiC fabricated by the reaction sintering method have been investigated by varying the blending composition of Si, C and SiC powders. First, specimens of the first-sintered body were formed at 473 K under a pressure of 20 MPa in a metallic mold and then sintered by heating at 973 K for 3.6 ks in Ar gas atmosphere. The first-sintered specimens were next put into a graphite mold to set Fe-75mass%Si alloy, which is often used as an inoculation agent, on the specimens and then held at 1693 K for 900 s in a vacuum furnace under a pressure of 10-1 Pa. Finally, SiC was successfully performed as a second-sintered body through the infiltration of Fe-75%Si alloy melt into the porous first-sintered body, which was followed by their mutual reaction. The microstructure and distributions of Fe and Si elements were observed using laser microscope and EPMA respectively. The hardness and fracture toughness were measured using a micro-Vickers hardness tester.</p><p>  The results indicate good infiltration of Fe-75%Si alloy melt into the first sintered body and that the second sintered body had a small amount of porosity. Iron carbides could not be found in the sintered structure but finely distributed iron silicides of FeSi and FeSi<sub>2</sub> were found. Furthermore, the fracture toughness of the body increased with increasing C content in the first sintered body. The mechanical properties were improved more than that of conventional sintered SiC when Fe-Si alloy was employed. The improvement in the properties is thought to be due to the uniform and fine distribution of FeSi, FeSi<sub>2</sub> and SiC in the matrix.</p>

    DOI: 10.11279/jfes.91.710

    CiNii Article

    Other Link: https://ci.nii.ac.jp/naid/130007740200

  • Effect of Nickel Content on Microstructural Evolution in Austempered Solution-Strengthened Ferritic Ductile Cast Iron Reviewed International journal

    Tokunaga T., Kim Y., Era H.

    Journal of Materials Engineering and Performance   28 ( 7 )   4034 - 4040   2019.07

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    © 2019, ASM International. The effects of Ni content and austempering temperature on microstructural evolution during austempering in solution-strengthened ferritic ductile cast iron with Ni contents between 0 and 1.1 mass% were investigated. The microstructure observation for the samples austempered at temperatures between 375 and 325 °C using an infrared gold image furnace was carried out with optical microscopy, x-ray diffraction measurements, and electron back-scattered diffraction pattern (EBSP) analysis. In addition, the Vickers hardness of both the austempered and as-quenched samples was measured under a load of 0.9807 N. According to the microstructure observations, the matrix of the samples austempered at temperatures between 375 and 325 °C exhibited finer acicular ferrite microstructure with increasing Ni content. Optical microscopy and EBSP analysis revealed that the amount of high-carbon austenite phase for the austempered samples increased with increasing Ni content and austempering temperature. Although samples with higher Ni content were found to contain more high-carbon austenite phase in the matrix, the Vickers hardness of the samples tended to increase with increasing Ni content at the same austempering temperature. The reason for this may be the higher carbon content in the matrix of the samples with higher Ni contents.

    DOI: 10.1007/s11665-019-04184-y

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  • Fabrication method of silicon carbide by infiltration of molten Fe-Si alloy through two-step reaction sintering Reviewed

    Hanada Y., Xiao Y., Sonoda A., Kang H.G., Nagayoshi H., Tokunaga T., Era H.

    73rd World Foundry Congress &amp;quot;Creative Foundry&amp;quot;, WFC 2018 - Proceedings   161 - 162   2018.09

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  • Effect of nickle content on microstructural evolution in austempered solution strengthened ferritic ductile cast iron Reviewed

    Tokunaga T., Kim Y., Era H.

    73rd World Foundry Congress &amp;quot;Creative Foundry&amp;quot;, WFC 2018 - Proceedings   191 - 192   2018.09

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    The effects of Ni content and austempering temperature on the microstructural evolution during austempering in SSFDI with different Ni contents were investigated. The results obtained are summarized as follows: (1) The bainitic ferrite microstructure for SSFDI was found to be much coarser with increasing Ni content. (2) The amounts of retained austenite for the samples after austempering increased with increasing Ni content and austempering temperature. (3) The Vickers hardness of the matrix for each sample decreased with the increase in austempering temperature, in contrast, increased with increasing Ni content.

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  • 状態図計算と金属溶射プロセスへの応用 Invited Reviewed

    徳永辰也,曽珍素,恵良秀則

    溶射   55 ( 2 )   80 - 84   2018.04

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    合金の状態図計算の概略を述べた後で,非平衡状態における準安定相生成の予測,合金の非平衡凝固時の挙動や結晶相の析出における状態図計算手法の適用についていくつか具体例を説明している.

  • Effect of cooling rate after fusing on the microstructural evolution and hardness of a Co-based self-fluxing alloy

    2 pages   2017.11

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  • Evaluation of residual stress in thermal-sprayed Ni-base self-fluxing alloy and alumina coatings

    2 pages   2017.11

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  • State of the art HSS work roll for later stands (F4-F7) in hot strip mill finishing trains Reviewed

    Oda N., Nozaki Y., Oohata T., Fleiner P., Tokunaga T., Era H.

    AISTech - Iron and Steel Technology Conference Proceedings   3   2657 - 2665   2017.05

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  • Evaluation of Surface Hardenability of Spheroidal Graphite Cast Iron by High Frequency Induction Heating Invited Reviewed

    Tatsuya TOKUNAGA, Ryo WAKANA, Chikara HAMAGUCHI, Daichi URAHAMA, Fu IWAKAWA, Naoki FUKUNAGA, Eizaburo MARUYAMA, Fumitaka OHTSUBO, Hidenori ERA

    Journal of Japan Thermal Spray Society   54 ( 1 )   8 - 11   2017.01

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  • Evaluation of anti-sticking effect of microstructure components in cast iron by friction thermal shock test Reviewed

    Oda N., Nozaki Y., Yamamoto H., Tokunaga T., Era H.

    72nd World Foundry Congress, WFC 2016   54 - 55   2016.05

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    Anti-sticking resistance is an important property to avoid deep cracks for hot strip mill work roll materials, especially in the later stands where mill incidents like cobble are likely to occur. Effect of microstructure components on anti-sticking property was investigated with cast steel and iron samples using friction thermal shock test. Graphite was found to show higher effect than carbides, although they also show preferable effect, depending on its carbide type.

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  • Effect of Si content on the ferrite-to-austenite transformation during austenitizing in spheroidal graphite cast iron Reviewed

    Tokunaga T., Furukawa T., Oda N., Era H.

    72nd World Foundry Congress, WFC 2016   36 - 37   2016.05

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    The effect of Si content on the ferrite-to-austenite transformation during austenitization in spheroidal graphite cast iron with a ferrite matrix was investigated. In this study, ferritic ductile cast irons with two different Si contents, 2.3 mass%Si (JIS-FCD400) and 3.8 mass%Si (SSFDI), were used. Microstructural observation revealed that the rate of the ferrite-to-austenite transformation for SSFDI was slower than for FCD400. In addition to the experiments, a simulation of the austenitization was performed for FCD and SSFDI using the DICTRA software package employing kinetic and thermodynamic databases. The simulations reproduced the experimental results on the austenitization behavior for both FCD and SSFDI well.

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  • Deformation Behavior of Corrosion-Resistant Fe-Cr Alloy Reviewed

    46   45 - 50   2016.03

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  • Small Punch Creep Property of High Cr Ferritic Steels Reviewed

    6 pages   2014.09

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  • Thermodynamic Analysis of Phase Equilibria in the Mg-Al-Ho Ternary System Reviewed

    54 ( 5 )   647 - 655   2013.05

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    DOI: 10.2320/matertrans.MI201226

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    CiNii Article

  • Evaluation of Sensitization and Self-Healing in Austenitic Stainless Steels Based on Simulations of Cr-Depleted Zones Reviewed

    51   965 - 968   2011.06

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    DOI: 10.2355/isijinternational.51.965

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    CiNii Article

  • Phase Transformation Behavior of Boron Containing 9% Cr Heat Resistant Steels Reviewed

    T. Tokunaga,H. Kaku,H. Miyazaki,F. Masuyama

    Materials Science Forum   638-642   2345 - 2350   2010.04

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    2010.04  -  2010.04

    DOI: 10.4028/www.scientific.net/MSF.638-642.2345

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  • Phase Transformation Behaviour of Creep-Strength Enhanced 9% Cr Steels Reviewed

    27 ( 1 )   61 - 65   2010.03

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    DOI: 10.3184/096034009X12604503186238

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  • Thermodynamic Analysis of Phase Equilibria in the Fe-Nb-P Ternary System Reviewed

    T. Tokunaga,N. Hanaya,H. Ohtani,M. Hasebe

    ISIJ International   49 ( 7 )   947 - 956   2009.07

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  • Comprehensive Approach to Creep Life Assessment of Martensitic Heat Resistant Steels Reviewed

    F. Masuyama,T. Tokunaga,N. Shimohata,T. Yamamoto,M. Hirano

    OHMI, Operation Maintenance and Materials Issues (Internet Journal)   6   2009.04

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  • Phase Transformation Behaviour of Grade 91 Ferritic Steel Reviewed

    T. Tokunaga,K. Hasegawa,F. Masuyama

    Materials Science and Engineering A   510-511   158 - 161   2009.04

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  • Thermodynamic Analysis of the Phase Equilibria in the Fe-Zr-B System Reviewed

    T.Tokunaga,K.Terashima,H.Ohtani,M.Hasebe

    Materials Transactions   49 ( 11 )   2534 - 2540   2008.11

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  • CALPHAD法援用による合金のアモルファス形成能評価 Reviewed

    徳永辰也,大谷博司,長谷部光弘

    熱測定   35 ( 4 )   200 - 208   2008.08

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    主要雑誌

  • Thermodynamic Analysis of the Fe-Mn-P Ternary Phase Diagram by Combining the First-Principles and CALPHAD Methods Reviewed

    T. Tokunaga,N. Hanaya,H. Ohtani,M. Hasebe

    Materials Science Forum   561-565   1899 - 1902   2007.10

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    2007.10  -  2007.10

  • Thermodynamic Analysis of the Phase Equilibria in the Nb-Ni-Zr System Reviewed

    T. Tokunaga,S. Matsumoto,H. Ohtani,M. Hasebe

    Materials Transactions   48 ( 9 )   2263 - 2271   2007.09

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  • Evaluation of the Glass-Forming Ability of Nb-Ni-Ti-Zr Quaternary Alloys Using the CALPHAD Approach Reviewed

    T. Tokunaga,H. Ohtani,M. Hasebe

    Materials Transactions   48 ( 7 )   1635 - 1638   2007.07

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  • Thermodynamic Calculation of Phase Equilibria in the Nb-Ni-Ti-Zr Quaternary System Reviewed

    T. Tokunaga,S. Matsumoto,H. Ohtani,M. Hasebe

    Materials Transactions   48 ( 2 )   89 - 96   2007.02

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  • Be-Mo2元系状態図の熱力学的解析 Reviewed

    中島一喜,徳永辰也,大谷博司,長谷部光弘

    日本金属学会誌   71 ( 2 )   187 - 189   2007.02

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  • Thermodynamic Assessment of the Al-Cr System by Combining the First-Principles and CALPHAD Methods Reviewed

    T. Tokunaga,H. Ohtani,M. Hasebe

    Materials Science Forum   539-543   2007.01

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    Canada   2007.01  -  2007.01

  • Thermodynamic analysis of the Fe-Cr-P ternary system by incorporating first-principles calculations into the CALPHAD approach

    T.Tokunaga,N.Hanaya,H.Ohtani,M.Hasebe

    Proceedings of the 13th National Symposium on Phase Diagrams, China-Japan Joint Symposium on Phase Diagrams, Materials Design and Their Applications   26 - 33   2006.11

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  • Nb-Ni-Zr系における相平衡の熱力学的解析 Reviewed

    徳永辰也,松本智史,大谷博司,長谷部光弘

    日本金属学会誌   70 ( 9 )   741 - 749   2006.09

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    主要雑誌

  • Thermodynamic Analysis of the Zr-Be System Using Thermochemical Properties Based on Ab Initio Calculations Reviewed

    T. Tokunaga,H. Ohtani,M. Hasebe

    Computer Coupling of Phase Diagrams and Thermochemistry   30 ( 2 )   201 - 208   2006.06

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  • Be-Ti-V3元系における相平衡の熱力学的計算 Reviewed

    西村雅俊,徳永辰也,大谷博司,長谷部光弘

    日本金属学会誌   70 ( 2 )   122 - 125   2006.02

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    主要雑誌

  • Thermodynamic Evaluation of the Phase Equilibria and Glass-Forming Ability of the Ti-Be System Reviewed

    T. Tokunaga,H. Ohtani,M. Hasebe

    Journal of Phase Equilibria and Diffusion   27 ( 1 )   83 - 91   2006.02

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  • Evaluation of the Glass-Forming Ability of Zr-Ti-Be Ternary Alloys Using the CALPHAD Approach Reviewed

    T. Tokunaga,H. Ohtani,M. Hasebe

    Materials Transactions   46 ( 12 )   2931 - 2939   2005.12

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    Language:English   Publishing type:Research paper (scientific journal)

  • Thermodynamic Analysis of the Phase Equilibria of the Nb-Ni-Ti System Reviewed

    S. Matsumoto,T. Tokunaga,H. Ohtani,M. Hasebe

    Materials Transactions   46 ( 12 )   2920 - 2930   2005.12

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  • Thermodynamic Study of Phase Equilibria in the Ni-Fe-B System Reviewed

    T. Tokunaga,H. Ohtani,M. Hasebe

    Materials Transactions   46 ( 6 )   1193 - 1198   2005.06

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  • 鉄系クラッド材の界面における拡散挙動 Reviewed

    大道雅幸,里昌英,徳永辰也,大谷博司,長谷部光弘

    日本金属学会誌   68 ( 12 )   1013 - 1019   2004.12

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    主要雑誌

  • Thermodynamic Evaluation of the Phase Equilibria and Glass-Forming Ability of the Fe-Si-B System Reviewed

    T. Tokunaga,H. Ohtani,M. Hasebe

    Computer Coupling of Phase Diagrams and Thermochemistry   28 ( 4 )   354 - 362   2004.12

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  • CALPHAD法を援用したNi-Si-B3元合金のアモルファス形成能の評価 Reviewed

    徳永辰也,大谷博司,長谷部光弘

    日本金属学会誌   68 ( 12 )   1002 - 1007   2004.12

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    主要雑誌

  • Thermodynamic Analysis of the Ni-Si-Ti System Using Thermochemical Properties Determined from Ab Initio Calculations Reviewed

    T. Tokunaga,K. Hashima,H. OHtani,M. Hasebe

    Materials Transactions   45 ( 5 )   1507 - 1514   2004.05

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  • シーム溶接によるチタン板と軟鋼板との重ね溶接 Reviewed

    西尾一政,加藤光昭,山口富子,徳永辰也,松本敦夫

    溶接学会論文集   21 ( 4 )   553 - 559   2003.11

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  • Phase Equilibria in the Ni-Si-B System Reviewed

    T. Tokunaga,K. Nishio,H. Ohtani,M. Hasebe

    Materials Transactions   44 ( 9 )   1651 - 1654   2003.09

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  • Thermodynamic Assessment of the Ni-Si System by Incorporating Ab Initio Energetic Calculations into the CALPHAD Approach Reviewed

    T. Tokunaga,K. Nishio,H. Ohtani,M. Hasebe

    Computer Coupling of Phase Diagrams and Thermochemistry   27 ( 2 )   161 - 168   2003.06

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Publications (Books)

  • 新版 鉄鋼材料と合金元素

    一般社団法人日本鉄鋼協会 鉄鋼材料と合金元素編集委員会(Joint editor ,  応用編第4章の4.2.4節から4.2.6節(5ページ)および第15章15.2.1節(4ページ)を分担執筆した.)

    一般社団法人日本鉄鋼協会  2015.11  ( ISBN:4930980879

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    本書は,鉄鋼材料における合金元素の役割を学術と応用の面から網羅するものである.学官界79名,産業界107名の執筆により,基礎編および応用編を併せて1076ページからなる.

Conference Prsentations (Oral, Poster)

  • Thermodynamic Analysis of Phase Equilibria in the Ge–Sn Binary System Considering Particle Size

    Robin Yoneda, Asuka Tsuru, Tatsuya Tokunaga

    9th international forum on Advanced Technologies (IFAT 2023)  2023.03 

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    Event date: 2023.03.07 - 2023.03.09   Language:English   Country:Taiwan, Province of China  

  • Phase Formation and Phase Transformation Behavior During Heating in FeCoNiCrBSi Alloy Powders Produced by Mechanical Alloying

    Yicheng Zhang, Manabu Ishimaru, Tatsuya Tokunaga, Hidenori Era

    10th International Symposium on Applied Engineering and Sciences (SAES2022)   2022.12 

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    Event date: 2022.12.12 - 2022.12.14   Language:English  

  • Thermodynamic Evaluation and Experimental Investigation of Suzuki Effect in the Al–X Binary Systems

    Tatsuya Tokunaga, Kazuki Hanada, Ryota Suemitsu, Seiji Miura

    5th International Symposium on Long-Period Stacking/Order and Mille-feuille Structures (LPSO/MFS 2022)  2022.12 

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    Event date: 2022.12.11 - 2022.12.14   Language:English  

  • 粒子サイズを考慮したGe–Sn二元系における相平衡の熱力学的解析

    米田路敏, 徳永辰也

    日本金属学会2022年秋期講演大会  2022.09 

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    Event date: 2022.09.20 - 2022.09.23   Language:Japanese  

  • CuLa合金電極開発のための金属組織観察

    朱尚萍, 赤嶺大志, 長畑佑輔, 當寺ヶ盛健志, 野井浩祐, 三木秀教, 張亦成, 徳永辰也, 飯久保智

    日本金属学会2022年春期講演大会  2022.03 

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    Event date: 2022.03.15 - 2022.03.17   Language:Japanese  

  • FeCoNiCrBSi系合金におけるナノスケール組織のTEM観察

    張亦成, 井上耕治, 徳永辰也, 石丸学, 恵良秀則

    日本金属学会2022年春期講演大会  2022.03 

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    Event date: 2022.03.15 - 2022.03.17   Language:Japanese  

  • Thermodynamic analysis of phase equilibria in the Ni-P binary system

    Hiroki Tsumura, Tatsuya Tokunaga

    9th International Symposium on Applied Engineering and Sciences (SAES2021)  2021.12 

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    Event date: 2021.12.05 - 2021.12.08   Language:English  

  • Thermodynamic calculation of phase equilibria in the Al-Fe-Zn-O quaternary system

    Naoki Matsumoto, Tatsuya Tokunaga

    9th International Symposium on Applied Engineering and Sciences (SAES2021)  2021.12 

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    Event date: 2021.12.05 - 2021.12.08   Language:English  

  • (Ge,Pb)(Se,Te)擬四元系における相平衡の実験的検討と熱力学計算

    鍋田純冶, 徳永辰也

    日本金属学会2021年秋期講演大会  2021.09 

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    Event date: 2021.09.14 - 2021.09.17   Language:Japanese  

  • Ni-P二元系における相平衡の熱力学的解析

    津村宙樹, 徳永辰也,大谷博司

    日本金属学会2021年秋期講演大会  2021.09 

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    Event date: 2021.09.14 - 2021.09.17   Language:Japanese  

  • Nano-scale phase separation in Fe20Co20Ni20Cr20B20-xSix rapidly solidified ribbons

    Yicheng Zhang, Koji Inoue, Tatsuya Tokunaga, Hidenori Era, Kazuhisa Shobu, Mitsuhiro Hasebe

    CALPHAD Global 2021  2021.06 

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    Event date: 2021.06.01 - 2021.06.24   Language:English  

  • Al基二元系合金における鈴木効 果の熱力学的評価

    徳永辰也, 花田一貴, 三浦誠司

    軽金属学会2021年春期大会  2021.05 

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    Event date: 2021.05.15 - 2021.05.16   Language:Japanese  

  • メカニカルアロイングによるFeCoNiCrBSi合金粉末作製とその組織形成

    張亦成, 徳永辰也

    日本金属学会2021年春期講演大会 

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    Event date: 2021.03.16 - 2021.03.19   Language:Japanese  

  • Thermodynamic calculation of phase equilibria in the Al-Li-Mg-Zn quaternary system

    Ami Hamajima, Akito Yanaru, Tatsuya Tokunaga, Yuto Morishita, Kenji Furuya

    8th International Symposium on Applied Engineering and Sciences (SAES2020) 

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    Event date: 2020.12.12 - 2020.12.19   Language:English  

  • α鉄中における窒素の粒界偏析に及ぼす合金元素の影響

    元村優太, 徳永辰也, 菖蒲一久, 長谷部光弘, 大谷博司

    第90回日本熱処理技術協会講演大会 

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    Event date: 2020.11.26 - 2020.11.27   Language:Japanese  

  • Ge-Sn二元系状態図の熱力学的解析

    田中遥, 津留明日香, 徳永辰也

    日本金属学会2021年秋期講演大会 

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    Event date: 2020.09.15 - 2020.09.18   Language:Japanese  

  • FeCoNiCrBSi系急冷薄帯合金におけるナノスケール組織成型評価

    張亦成, 井上耕治, 徳永辰也, 菖蒲一久, 長谷部光弘

    日本金属学会2020年秋期講演大会 

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    Event date: 2020.09.15 - 2020.09.18   Language:Japanese  

  • FeCoNiCrBSi系合金における組織形成の評価

    Yicheng Zhang,徳永辰也,恵良秀則

    日本金属学会第165回秋期講演大会  日本金属学会

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    Event date: 2019.09.11 - 2019.09.13   Language:Japanese  

  • 合金中の積層欠陥における溶質元素の偏析挙動の熱力学的評価

    徳永辰也,和泉勇樹,恵良秀則

    日本金属学会第165回秋期講演大会  日本金属学会

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    Event date: 2019.09.11 - 2019.09.13   Language:Japanese  

  • Thermodynamic Evaluation of Grain Boundary Segregation and Precipitation Behavior in Steels

    Tatsuya Tokunaga, Yuta Motomura, Hidenori Era, Hiroshi Ohtani

    CALPHAD XLVIII 

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    Event date: 2019.06.02 - 2019.06.07   Language:English  

  • Phase-field simulation of solidification for spheroidal graphite cast iron

    田中遥,浅成勇介,大出真知子,徳永辰也,恵良秀則

    令和元年度日本金属学会・日本鉄鋼協会・軽金属学会九州支部合同学術講演会 

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    Event date: 2019.06.01   Language:English  

  • Fe-Mo-B三元系における相平衡の実験的検討と熱力学的解析

    元村優太,稲田拓哉,徳永辰也,恵良秀則,千綿伸彦,太田元基

    令和元年度日本金属学会・日本鉄鋼協会・軽金属学会九州支部合同学術講演会 

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    Event date: 2019.06.01   Language:Japanese  

  • 液体急冷法によるFe16.7Co16.7Ni16.7Cr16.7B16.7Si16.7薄帯の作製と評価

    張亦成,江良尚哉,徳永辰也,恵良秀則

    第72回日本鋳造工学会九州支部講演大会  日本鋳造工学会九州支部

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    Event date: 2019.04.05   Language:Japanese  

  • Fe-Co-Ni-Cr-B-Si系ハイエントロピー合金における組織形成とその熱的安定性の評価

    Yicheng Zhang,徳永辰也,恵良秀則

    日本金属学会第164回春期講演大会 

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    Event date: 2019.03.20 - 2019.03.22   Language:Japanese  

  • Thermodynamic Study on Segregation of Solute Elements to Stacking Faults in Some Binary Alloy Systems

    Tatsuya Tokunaga, Hidenori Era

    LPSO2018 

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    Event date: 2018.12.03 - 2018.12.05   Language:English  

  • Thermodynamic Analysis of Phase Equilibria in Chalcogenide Thermoelectric Materials

    Tatsuya Tokunaga, Yusuke Oshiro, Hidenori Era

    TOFA2018 

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    Event date: 2018.10.01 - 2018.10.05   Language:English  

  • Fabrication method of silicon carbide by infiltration of molten Fe-Si alloy through two-step reaction sintering

    Tatsuya Tokunaga, Yeong-Jin Kim, Hidenori Era

    73rd World Foundry Congress 

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    Event date: 2018.09.23 - 2018.09.27   Language:English  

  • Effect of Nickel Content on Microstructural Evolution in Austempered Solution Strengthened Ferritic Ductile Cast Iron

    Tatsuya Tokunaga, Yeong-Jin Kim, Hidenori Era

    73rd World Foundry Congress 

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    Event date: 2018.09.23 - 2018.09.27   Language:English  

  • Ⅳ-Ⅵ化合物における安定および準安定平衡の熱力学的解析

    小城佑介,菖蒲一久,長谷部光弘,徳永辰也,恵良秀則

    日本金属学会第163回秋期講演大会 

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    Event date: 2018.09.19 - 2018.09.21   Language:Japanese  

  • In-Zr二元系における相平衡の実験的検討

    山本真夕季,徳永辰也,恵良秀則

    日本金属学会第163回秋期講演大会 

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    Event date: 2018.09.19 - 2018.09.21   Language:Japanese  

  • RE-O二元系状態図の熱力学的解析

    徳永辰也,長谷部光弘

    日本金属学会第163回秋期講演大会 

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    Event date: 2018.09.19 - 2018.09.21   Language:Japanese  

  • Influence of impurities on formation and growth of sigma phase in Fe-Cr reactive diffusion couples

    浜島亜実,下崎敏唯,徳永辰也,恵良秀則

    平成30年度日本金属学会・日本鉄鋼協会・軽金属学会九州支部合同学術講演会 

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    Event date: 2018.06.23   Language:English  

  • Fe-Cr合金の475℃脆性に及ぼす微量合金元素の影響

    田中一圭,徳永辰也,恵良秀則,石丸詠一朗

    平成30年度日本金属学会・日本鉄鋼協会・軽金属学会九州支部合同学術講演会 

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    Event date: 2018.06.23   Language:Japanese  

  • In-Zr二元系における相平衡の実験的検討

    山本真夕季,徳永辰也,恵良秀則

    平成30年度日本金属学会・日本鉄鋼協会・軽金属学会九州支部合同学術講演会 

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    Event date: 2018.06.23   Language:Japanese  

  • フェースフィールド法による球状黒鉛鋳鉄の凝固シミュレーション

    田中遥,浅成勇介,徳永辰也,恵良秀則,大出真知子

    第71回日本鋳造工学会九州支部講演大会  日本鋳造工学会九州支部

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    Event date: 2018.04.10   Language:Japanese  

  • Evaluation of residual stress in thermal-sprayed Ni-base self-fluxing alloy and alumina coatings

    Ikki Kambayashi, Zhensu Zeng, Nobuaki Sakoda, Tatsuya Tokunaga, Hidenori Era

    8th Asian Thermal Spray Conference and Exhibition 

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    Event date: 2017.11.07 - 2017.11.08   Language:English  

  • State of the Art HSS Work Roll for Later Stands (F4-F7) in Hot Strip Mill Finishing Trains

    Nozomu Oda, Yasunori Ozaki, Takumi Oohata, Paul Fleiner, Tasuya Tokunaga, Hidenori Era

    2017 AISTech Conference 

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    Event date: 2017.05.10   Language:English  

  • Microstructure and mechanical properties of SUS316L consolidated by Selective Laser Melting

    The 4th Symposium on Applied Engineering and Sciences 

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    Event date: 2016.12.17 - 2016.12.18   Language:English  

  • Simulation of Microsegregation during Solidification of Mg97Zn1RE2 Alloys using the Scheil-Gulliver Approximation

    3rd International Conference on Computational Methods in Engineering and Health Sciences 2016 

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    Event date: 2016.12.17 - 2016.12.18   Language:English  

  • Effect of cooling rate after melting on formation of LPSO structure in Mg97Zn1RE2 aaloys

    Tatsuya Tokunaga, Shohei Ikeda, Satoshi Iikubo, Hiroshi Ohtani, Hidenori Era

    LPSO2016 

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    Event date: 2016.12.05 - 2016.12.07   Language:English  

  • Effect of cooling rate after melting on formation of LPSO structure in Mg97Zn1RE2 alloys

    LPSO2016 

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    Event date: 2016.12.04 - 2016.12.07   Language:English  

  • 高周波焼入れによる 球状黒鉛鋳鉄の表面改質

    徳永辰也,若菜凌,濱口主税,浦濱大地,岩川風,福永修大,丸山栄三郎,大坪文隆,惠良秀則

    日本溶射学会第104回全国講演大会 

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    Event date: 2016.11.17 - 2016.11.18   Language:Japanese  

  • Co基自溶合金のミクロ組織と硬さに及ぼす フュージング後の冷却速度の影響

    吉田和貴,徳永辰也,惠良秀則

    日本溶射学会第104回全国講演大会 

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    Event date: 2016.11.17 - 2016.11.18   Language:Japanese  

  • Mg97Zn1Gd2合金におけるLPSO構造形成に及ぼす溶融後冷却速度の影響

    徳永辰也,山本美鈴,池田昇平,飯久保智,大谷博司,惠良秀則

    日本鋳造工学会第168回全国講演大会 

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    Event date: 2016.09.24 - 2016.09.25   Language:Japanese  

  • Mg97Zn1RE2合金におけるLPSO構造形成に及ぼす溶融後冷却速度の影響

    池田昇平、徳永辰也、飯久保智、大谷博司、恵良秀則

    日本金属学会第159回秋期講演大会 

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    Event date: 2016.09.21 - 2016.09.23   Language:Japanese  

  • Experimental investigation and thermodynamic calculation of the phase equilibria in the Ni-rich portion of the Ni-Cr-P system

    TOFA2016 

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    Event date: 2016.09.04 - 2016.09.09   Language:English  

  • Effect of Ni content on the ferrite-to-austenite transformation during austenitizing in spheroidal graphite cast iron

    CALPHAD XLV 

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    Event date: 2016.05.29 - 2016.06.03   Language:English  

  • Evaluation of Anti-sticking Effect of Microstructure Components in Cast Iron by Friction Thermal Shock Test

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    Event date: 2016.05.21 - 2016.05.25   Language:English  

  • Effect of Si Content on the Ferrite-to-Austenite Transformation during Austenitizing in Spheroidal Graphite Cast Iron

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    Event date: 2016.05.21 - 2016.05.25   Language:English  

  • 熱量測定を用いた高クロム鋼の材料状態評価

    笹渕亮太,徳永辰也,惠良 秀則,栗毛野裕太,駒崎慎一

    日本鉄鋼協会春季講演大会 

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    Event date: 2016.03.23 - 2016.03.25   Language:Japanese  

  • Deformation Behavior of High Corrosion-Resistant Fe-Cr Alloy

    H.Era

    The 47th Annual Meeting of Korean Society of Microscopy(Special International Symposium On Microscopy and Microanalysis of Materials)  

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    Event date: 2015.11   Language:English  

  • Ni基自溶合金のフュージング過程におけるミ クロ組織形成とCCT曲線

    吉田和貴, 徳永辰也, 恵良秀則

    日本溶射学会第102回全国講演大会 

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    Event date: 2015.11   Language:Japanese  

  • 高Si球状黒鉛鋳鉄におけるオーステナイト変態に及ぼすNiの影響

    徳永辰也、古川立樹、恵良秀則

    日本鋳造工学会第167回全国講演大会 

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    Event date: 2015.10   Language:Japanese  

  • 合金鋳鋼の組織形成と破壊靭性に及ぼすSiの影響

    山本浩史、小田望、徳永辰也、恵良秀則

    日本鋳造工学会第167回全国講演大会 

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    Event date: 2015.10   Language:Japanese  

  • Mg97Zn1RE2合金における凝固偏析の定量評価

    池田昇平、徳永辰也、恵良秀則、飯久保智、大谷博司

    日本金属学会第157回秋期講演大会 

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    Event date: 2015.09   Language:English  

  • U-RE-O3元系(RE=Ce, Eu, Gd)を構成する2元系状態図の熱力学的解析

    徳永辰也, 恵良秀則, 飯久保智, 大谷博司, 倉田 正輝

    日本金属学会第157回秋期講演大会 

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    Event date: 2015.09   Language:Japanese  

  • 合金鋳鋼の炭化物形成に及ぼすSiの影響

    山本浩史、小田望、徳永辰也、恵良秀則

    日本金属学会第157回秋期講演大会 

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    Event date: 2015.09   Language:Japanese  

  • Thermodynamic modelling of the U-RE-O (RE = Ce, Eu and Gd) sub-systems

    T.Tokunaga, H.Era, S.Iikubo, H.Ohtani, M.Kurata

    CALPHAD XLIV 

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    Event date: 2015.05 - 2015.06   Language:English  

  • Scheil-Gulliverモデルに基づくMg97Zn1RE2合金のミクロ偏析シミュレーション

    徳永辰也、恵良秀則、飯久保智、榎木勝徳、大谷博司

    軽金属学会第127回秋期大会 

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    Event date: 2014.11   Language:Japanese  

  • 高周波焼入れした球状黒鉛鋳鉄の組織形成

    若菜凌、濱口主税、浦濱大地、岩川風、福永修大、丸山栄三郎、大坪文隆、徳永辰也、恵良秀則

    日本鋳造工学会第165回全国講演大会 

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    Event date: 2014.10   Language:Japanese  

  • Solidification Simulation of Microsegregation Based on the Scheil-Gulliver Model in Mg97Zn1RE2 Alloys

    T.Tokunaga, H.Era, S.Iikubo, M.Enoki, H.Ohtani

    LPSO2014 

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    Event date: 2014.10   Language:English  

  • 球状黒鉛鋳鉄における炭素拡散と組織形成に及ぼすSi偏析の影響

    古川立樹、西尾理恵、大坪文隆、徳永辰也、恵良秀則

    日本鋳造工学会第165回全国講演大会 

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    Event date: 2014.10   Language:Japanese  

  • Scheilの式によるMg97Zn1RE2合金の凝固偏析挙動評価

    徳永辰也、恵良秀則、飯久保智、大谷博司

    日本金属学会第155回秋期講演大会 

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    Event date: 2014.09   Language:Japanese  

  • フェライト系耐熱鋼のクリープ破断強度に及ぼす化学成分と構成相の影響

    本人

    日本鉄鋼協会春季講演大会 

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    Event date: 2010.03   Language:Japanese  

  • DICTRAによるNbC成長シミュレーション

    本人

    日本鉄鋼協会春季講演大会 

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    Event date: 2010.03   Language:Japanese  

  • オーステナイト系ステンレス鋼におけるM23C6炭化物粒界析出シミュレーション

    本人

    日本金属学会春期講演大会 

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    Event date: 2010.03   Language:Japanese  

  • Cr-Mo-B3元系状態図の熱力学的解析

    日本金属学会秋期大会 

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    Event date: 2009.09   Language:Japanese  

  • Phase Transformation Behavior of Boron Containing 9% Cr Heat Resistant Steels

    THERMEC 2009, International Conference on Processing & Manufacturing of Advanced Materials 

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    Event date: 2009.08   Language:English  

  • Thermodynamic Analysis of the Cr-Mo-B Ternary System

    CALPHAD XXXVIII 

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    Event date: 2009.05   Language:English  

  • Phase Transformation Behaviour of Creep-Strength Enhanced 9% Cr Steels

    本人

    2nd International ECCC Conference, Creep & Fracture in High Temperature Components Design & Life Assessment 

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    Event date: 2009.04   Language:Japanese  

  • 9Cr-0.5Mo-1.8W-V-Nb(P92)鋼のAc1温度近傍における相変態挙動

    本人

    日本鉄鋼協会2009年春季(第157回)大会 

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    Event date: 2009.03   Language:Japanese  

  • Gr.91フェライト鋼のAc1温度近傍における相変態挙動

    本人

    日本鉄鋼協会2008年秋季(第156回)大会 

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    Event date: 2008.09.23 - 2008.09.25   Language:Japanese  

  • Phase Transformation Behaviour of Creep-Strength Enhanced Ferritic Steels

    Creep 2008, the 11th Int. Conf. on Creep and Fracture of Engineering Materials and Structures 

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    Event date: 2008.05.04 - 2008.05.09   Language:English  

  • Effect of the addition of niobium and titanium on the diffusion behaviour at the interface between Ni-based self-fluxing alloy coatings and a steel plate

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    Event date: 2008.03   Language:English  

  • Thermodynamic Analysis of the Fe-Mn-P Ternary Phase Diagrams by Combining the First-Principles and CALPHAD Methods

    The Sixth Pacific Rim International Conference on Advanced Materials and Processing 

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    Event date: 2007.11.05 - 2007.11.09   Language:English  

  • Fe-Zr-B 3元系状態図の熱力学的解析

    日本鉄鋼協会2007年秋季(第154回)大会 

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    Event date: 2007.09   Language:Japanese  

  • Fe-Co-B 3元系における相平衡の熱力学的解析

    本人

    日本鉄鋼協会2007年秋季(第154回)大会 

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    Event date: 2007.09   Language:Japanese  

  • Thermodynamic Analysis of the Fe-Zr-B Ternary System

    CALPHAD XXXVI 

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    Event date: 2007.05.06 - 2007.05.11   Language:English  

  • Fe-Mn-P 3元系状態図の熱力学的解析

    本人

    日本鉄鋼協会2007年春季(第153回)大会 

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    Event date: 2007.03   Language:Japanese  

  • Nb-Ni-Zr-H 4元系における相平衡の熱力学的計算

    本人

    日本金属学会2007年春期(第140回)大会 

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    Event date: 2007.03   Language:Japanese  

  • Mg-Zn-RE系合金における準安定構造の熱力学的安定性

    日本金属学会2007年春期(第140回)大会 

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    Event date: 2007.03   Language:Japanese  

  • Fe-B-C 3元系状態図の熱力学的解析

    日本鉄鋼協会2007年春期(第153回)大会 

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    Event date: 2007.03   Language:Japanese  

  • Nb-Ni-Ti-Zr 4元系における相平衡とガラス形成能の熱力学的評価

    本人

    第50回日本学術会議材料工学連合講演会 

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    Event date: 2006.12   Language:Japanese  

  • Thermodynamic Analysis of the Fe-Cr-P Ternary System by Incorporating First-Principles Calculations into the CALPHAD Approach

    China-Japan Joint Symposium on Phase Diagrams, Materials Design and Their Applications 

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    Event date: 2006.11.08 - 2006.11.11   Language:English  

  • Evaluation of the Glass-Forming Ability of Nb-Ni-Ti-Zr Quaternary Alloys Using the CALPHAD Approach

    The 5th International Bulk Metallic Glasses Conference 

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    Event date: 2006.10.01 - 2006.10.05   Language:English  

  • Fe-B-C 3元系状態図の熱力学的解析

    日本鉄鋼協会2006年秋季(第152回)大会 

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    Event date: 2006.09   Language:Japanese  

  • Be-Mo2元系状態図の熱力学的解析

    日本金属学会2006年秋期(第139回)大会 

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    Event date: 2006.09   Language:Japanese  

  • Nb-Ni-Ti-Zr 4元系における相平衡の熱力学的計算

    本人

    日本金属学会2006年秋期(第139回)大会 

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    Event date: 2006.09   Language:Japanese  

  • Thermodynamic Assessment of the Al-Cr System by Combining the First-Principles and CALPHAD Methods

    THERMEC 2006, International Conference on Processing & Manufacturing of Advanced Materials 

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    Event date: 2006.07.04 - 2006.07.08   Language:English  

  • Ni-Cr-B 3元系状態図の熱力学的解析

    日本金属学会春期(第138回)大会 

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    Event date: 2006.03   Language:Japanese  

  • 金属ホウ化物の生成エネルギーの第一原理計算

    本人

    日本金属学会春期(第138回)大会 

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    Event date: 2006.03   Language:Japanese  

  • Nb-Ni-Zr 3元合金のアモルファス形成能の評価

    本人

    日本金属学会春期(第138回)大会 

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    Event date: 2006.03   Language:Japanese  

  • Fe-Cr-P 3元系状態図の熱力学的解析

    本人

    日本鉄鋼協会第151回春季講演大会 

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    Event date: 2006.03   Language:Japanese  

  • 3d遷移金属ホウ化物の生成エネルギーの第一原理計算

    本人

    日本鉄鋼協会第150回秋季講演大会 

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    Event date: 2005.09   Language:Japanese  

  • Be-Ti-V 3元系状態図の熱力学的解析

    日本金属学会秋期(第137回)大会 

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    Event date: 2005.09   Language:Japanese  

  • Thermodynamic Analysis of the Zr-Be System Using Thermochemical Properties Based on Ab Initio Calculations

    CALPHAD XXXIV 

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    Event date: 2005.05.22 - 2005.05.27   Language:English  

  • Ti-Be および V-Be 2元系状態図の熱力学的解析

    本人

    日本金属学会春期(第136回)大会 

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    Event date: 2005.03   Language:Japanese  

  • Thermodynamic Evaluation of Phase Equilibria and Glass-Forming Ability in the Ti-Be System

    ASM Materials Solutions Conference & Show, Symposium on User Aspects of Phase Diagrams 

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    Event date: 2004.10.18 - 2004.10.20   Language:English  

  • Ni基溶射皮膜界面での浸炭と添加元素による抑制効果

    日本金属学会秋期(第135回)大会 

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    Event date: 2004.09   Language:Japanese  

  • CALPHAD法を適用したNi-Si-B3元系合金のガラス形成能の評価

    本人

    日本金属学会秋期(第135回)大会 

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    Event date: 2004.09   Language:Japanese  

  • Thermodynamic Evaluation of the Phase Equilibria and Glass-Forming Ability in the Fe-Si-B System

    CALPHAD XXXIII 

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    Event date: 2004.05.30 - 2004.06.04   Language:English  

  • Ni基自溶合金溶射皮膜の相平衡と皮膜界面における拡散挙動

    日本金属学会秋期(第134回)大会 

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    Event date: 2004.03   Language:Japanese  

  • Fe-Si-B 3元系における相平衡

    本人

    日本金属学会秋期(第134回)大会 

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    Event date: 2004.03   Language:Japanese  

  • スタッド溶接によるマグネシウム合金とアルミニウム合金の接合

    溶接学会秋季全国大会 

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    Event date: 2003.10   Language:Japanese  

  • Ni-Ti 2元系における相互拡散シミュレーション

    本人

    日本金属学会秋期(第133回)大会 

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    Event date: 2003.10   Language:Japanese  

  • Ni-Si-Ti-B 3元系状態図の相平衡

    日本金属学会秋期(第133回)大会 

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    Event date: 2003.10   Language:Japanese  

  • Thermodynamic Assessment of the Ni-Si System by Incorporating Ab-Initio Energetic Calculations into the CALPHAD Approach

    CALPHAD XXXII 

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    Event date: 2003.05.25 - 2003.05.30   Language:English  

  • Ni-Si-B 3元系における相平衡

    本人

    日本金属学会秋期(第132回)大会 

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    Event date: 2003.03   Language:Japanese  

  • Ni-Si-Ti 3元系状態図の熱力学的解析

    日本金属学会秋期(第132回)大会 

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    Event date: 2003.03   Language:Japanese  

  • Ni-Si 2元系状態図の熱力学的解析

    本人

    日本金属学会秋期(第131回)大会 

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    Event date: 2002.11   Language:Japanese  

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Lectures

  • CALPHAD法を援用した溶融合金の物性予測

    日本溶射学会九州支部 2022年度研究会  2023.01 

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    Event date: 2023.01.10   Language:Japanese   Presentation type:Others  

  • CALPHAD法の基礎とその適用例について

    Thermo-Calcカンファレンス2022  2022.12  伊藤忠テクノソリューションズ株式会社

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    Event date: 2022.12.15   Language:Japanese   Presentation type:Others  

  • 状態図計算の 鋳造・溶射プロセスへの適用

    日本溶射学会九州支部 2021年度研究会  2022.01 

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    Event date: 2022.01.18   Language:Japanese   Presentation type:Others  

  • FeCoNiCrBSi系合金における相形成とその相変態挙動

    日本材料学会・粉体粉末冶金協会 2021年度第1回合同研究会  2021.12  日本材料学会 金属ガラス部門委員会/粉体末冶金協会 金属ガラス・ナノ結晶材料委員会研究会

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    Event date: 2021.12.07   Language:Japanese   Presentation type:Others  

  • Effect of cooling rate after fusing on the microstructural evolution and hardness of a Co-based self-fluxing alloy

    Effect of cooling rate after fusing on the microstructural evolution and hardness of a Co-based self-fluxing alloy  2017.11 

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    Event date: 2017.11.07 - 2017.11.08   Language:English   Presentation type:Invited lecture  

Honors and Awards

  • 2019 AIST Hunt-Kelly Outstanding Paper Award (AIME) First Place

    Association for Iron & Steel Technology   2019.05.07

    Nozomu Oda, Yasunori Nozaki, Takumi Ohtata, Paul C. Fleiner, Tatsuya Tokunaga, Hidenori Era

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    Country:United States

  • 2018 Rolls Technology Best Paper Award

    Association for Iron & Steel Technology   2018.05.07

    Nozomu Oda, Yasunori Ozaki, Takumi Oohata, Paul Fleiner, Tasuya Tokunaga, Hidenori Era

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    Country:United States

  • H27年度シンクロLPSO研究成果報告会 優秀ポスター賞

    文部科学省科学研究費補助金「新学術領域研究」シンクロ型LPSO構造の材料科学-次世代軽量構造材料への革新的展開‐   2016.03.04

    徳永辰也

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    Country:Japan

Grants-in-Aid for Scientific Research

  • 粒界アモルファス相からのホウ炭化物生成挙動に基づく鋼の焼入れ性向上メカニズム解明

    Grant number:18K04752  2018.04 - 2021.03   基盤研究(C)

  • 熱量測定に基づく高クロム鋼のミクロ組織状態変化の定量評価

    Grant number:26420726  2014.04 - 2017.03   基盤研究(C)

  • 超高強度マグネシウム合金の相変態挙動に基づくLPSO構造形成メカニズムの解明

    Grant number:24109507  2012.04 - 2014.03   新学術領域研究

Award for Educational Activities

  • 技術奨励賞

    (公社)日本鋳造工学会九州支部   2023.04.28

  • 奨学賞

    日本金属学会・日本鉄鋼協会   2023.03

  • 奨励賞

    日本鋳造工学会   2021.03.01

  • 研究発表奨励賞(優秀賞)

    日本熱処理技術協会   2020.11.26

Social activity outside the university

  • 身近な金属材料の科学―古より未来へ―

    Role(s):Lecturer

    福岡県立久留米高等学校  2021.11.09

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    Audience: High school students

    Type:Visiting lecture