Faculty Profiles - YAMAGUCHI Tomiko

Papers - YAMAGUCHI Tomiko

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連続冷却過程におけるγ→α相変態のモンテカルロ・シミュレーション Reviewed

趙放,山口富子,池田英幸,西尾一政

日本金属学会誌 73 ( 7 ) 495 - 501 2009.07

Crystallographic Observation for Au/Au Bond Interface by Ultrasonic Bonding Reviewed

SOGAWA Mitsuomi, OTSUBO Fumitaka, YAMAGUCHI Tomiko, NISHIO Kazumasa, ERA Hidenori

Journal of The Japan Institute of Electronics Packaging ( Japan Institute of Electronics Packaging ) 12 ( 4 ) 307 - 312 2009.07

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

A crystallography study and observation of microstructure were carried out on the joint of an Au ball and Au electrode formed using two modes of ultrasonic bonding which show differences under the life test. A non-bonded joint was seen on the samples using SEM observation. Also, it was found that the length of bonding of the LP sample, which was bonded using low ultrasonic output, was short compared with that of the HP sample, which was bonded using high ultrasonic output. From an analysis of the IPF image obtained using EBSD, the interface of the joint in the LP sample apparently retained the crystal orientation of the interface before bonding. However, {001} in the HP sample, the crystal grain formed parallel to the bonded plane in the newly formed large area without obvious interface from the joint. It was concluded from this that the crystal grain having the same axis as the Au ball formed in the Au electrode though the orientation was not obvious from SEM and TEM observation.

DOI： 10.5104/jiep.12.307

Scopus

CiNii Article

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84871181779&origin=inward

Research and education of light metals in Kyushu institute of technology Reviewed

Hasebe M., Ohtani H., Shinozaki N., Era H., Nishio K., Yamaguchi T.

Keikinzoku/Journal of Japan Institute of Light Metals 59 ( 7 ) 389 - 391 2009.07

Monte Carlo Simulation of .GAMMA..RAR..ALPHA. Transformation during Continuous Cooling Reviewed

Fang Zhao, Tomiko Yamaguchi, Hideyuki Ikeda, Kazumasa Nishio

Journal of the Japan Institute of Metals and Materials ( The Japan Institute of Metals and Materials ) 73 ( 7 ) 495 - 501 2009.07

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

  The γ→α transformation during continuous cooling was simulated by Monte Carlo method on conditions of ten stages of cooling rate and nine stages of austenite grain sizes. The authors have investigated effects of cooling rate and initial austenite grain size on γ→α transformation and ferrite grain growth. Main results obtained are as follows. The relationship between ferrite grain sizes and cooling rate showed that the ferrite grain sizes hyperbolically decreased against the cooling rate until 500°C/s and then the ferrite grain refinement hardly occurred. The ferrite grain sizes were decreased with an decrease of the initial austenite grain sizes. γ→α transformation rate was increased with the refinement of initial austenite grain. A linear relationship between initial austenite grain sizes and final ferrite grain sizes was obtained by simulation of continuous cooling.<br>

DOI： 10.2320/jinstmet.73.495

Scopus

CiNii Article

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=69749115986&origin=inward

極低炭素鋼に対する繰返しレーザ照射による結晶粒微細化のモンテカルロ・シミュレーション Reviewed

趙放,山口富子,池田英幸,加藤光昭,西尾一政

溶接学会論文集 27 ( 1 ) 89 - 95 2009.04

アルミニウム合金レーザ溶接部の機械的性質

山口富子 , 加藤光昭 , 西尾一政

軽金属溶接 ( 軽金属溶接構造協会 ) 47 ( 4 ) 151 - 160 2009.04

Mechanical properties of aluminum alloy welds by laser beam Reviewed

Yamaguchi T., Katoh M., Nishio K.

Keikinzoku Yosetsu/Journal of Light Metal Welding and Construction 47 ( 4 ) 13 - 22 2009.04

Au/Ag超音波接合部の結晶組織観察 Reviewed

十川三臣,山口富子,大坪文隆,西尾一政,恵良秀則

Mate 2009 361 - 366 2009.01

The development of composite consisting of cast iron / mild steel using fusion welding

HONDA TSUGUO, kuroki hironori, yamaguchi tomiko, nishio kazumasa

Preprints of the National Meeting of JWS ( JAPAN WELDING SOCIETY ) 2009 ( 0 ) 95 - 95 2009.01

Investigation for Evaluating the Depth of a Carburized Layer by Means of Ultrasonic Technique

Yoshimoto Tatsuya, Horikawa Hideki, Yamaguchi Tomiko, Nishio Kazumasa, Sekine Kazuyoshi, Kasai Naoya

Preprints of the National Meeting of JWS ( JAPAN WELDING SOCIETY ) 2009 ( 0 ) 56 - 56 2009.01

Wear characteristic of titanium using laser surface modification method Reviewed

Yamaguchi T., Nishio K., Era H., Katoh M.

Welding International 22 ( 9 ) 582 - 587 2008.10

アルミニウムと軟鋼とのスポット溶接について

西尾一政,山口富子,大槻みなみ

SVBL年報/九州工業大学 12 23 - 26 2008.09

Characteristics of stainless steel welding metal byAA-TIG Welding

GONDO Ryo, ANZAI Toshio, YAMAGUCHI Tomiko, NISHIO Kazumasa, SHINOHARA Makoto

Pre-Prints of the National Meeting of JWS ( Japan Welding Society ) 83 332 - 333 2008.08

アルミニウム青銅とステンレス鋼のスタッド溶接 Reviewed

芹野正幸,山口富子,永田修平,西尾一政

銅と銅合金 47 ( 1 ) 198 - 202 2008.08

Observation of Bonded Area of Au Bump and Cu Lead with Sn Plating by Thermo-Compression Bonding Reviewed

Mitsuomi Sogawa,Fumitaka Otsubo,Tomiko Yamaguchi,Hidenori Era,Kazumasa Nishio

International Conference on Electronics Packaging (ICEP2008) 291 - 296 2008.06

我が国の鉄道創成期に使用されたレールの変遷

西尾一政,山口富子,桝本弘毅,岡崎睦

金属 78 ( 3 ) 283 - 288 2008.03

超音波接合によるAu/Au界面の結晶組織観察

十川三臣,大坪文隆,山口富子,恵良秀則,西尾一政

第22回エレクトロニクス実装学会講演大会講演論文集 173 - 174 2008.03

官設鉄道創成から日本標準規格制定までのレール技術の変遷

西尾　一政,山口　富子,桝本　弘毅,岡崎　睦

日本の技術革新ー経験蓄積と知識基盤化ー研究成果集 51 - 54 2008.02

Flip Chip　実装による信頼性のあるAu/Al接合部の組織 Reviewed

十川三臣,大坪文隆,山口富子,西尾一政,恵良秀則

Mate 2008 195 - 200 2008.02

Observation of Crystallographic Microstructure of Au Ball/Au Electrode Joint by Ultrasonic Welding Reviewed

Sogawa Mitsuomi, Otsubo Fumitaka, Yamaguchi Tomiko, Nishio Kazumasa, Era Hidenori

Proceedings of JIEP Annual Meeting ( The Japan Institute of Electronics Packaging ) 22 ( 0 ) 173 - 175 2008.01

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Papers - YAMAGUCHI Tomiko