OHNUMA Ikuo

J-GLOBAL         Last updated: Dec 21, 2018 at 07:53
 
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Name
OHNUMA Ikuo
Affiliation
National Institute for Materials Science (NIMS)
Job title
Group Leader
Degree
Ph.D(Tohoku University)

Research Areas

 
 

Academic & Professional Experience

 
Apr 2016
 - 
Today
Group Leader, Research Center for Structural Materials (RCMS), National Institute for Materials Science (NIMS)
 
Apr 2015
 - 
Mar 2016
National Institute for Materials Science (NIMS)
 
 
 - 
Mar 2015
Associate Professor, Tohoku University Graduate School of Engineering, Department of Metallurgy, Materials Forming and Structural Control,Computational Microstructure Design
 

Education

 
Apr 1991
 - 
Mar 1993
Department of Materials Science, Graduate school of engineering, Tohoku University
 
Apr 1987
 - 
Mar 1991
Faculty of Engineering, Tohoku University
 

Awards & Honors

 
2012
日本金属学会功績賞
 
2010
日本鉄鋼協会西山記念賞
 
2008
第5回 本多記念奨励賞
 
2007
第4回 日本金属学会村上奨励賞
 
2005
APDIC (Alloy Phase Diagram Committee) Best Paper Award
 

Misc

 
Kwangsik Han, Inho Lee, Ikuo Ohnuma, Kaneharu Okuda, Ryosuke Kainuma
ISIJ International   58 1578-1583   Sep 2018
© 2018 Iron and Steel Institute of Japan. All rights reserved. Annealing temperature and composition dependences of hardness for the intermetallic compound phases, especially -Fe4Zn91p-Fe13Zn126 and1k-FeZn7, which are obtained in Zn-rich portion o...
K. Han, I. Ohnuma, K. Okuda, K. Okuda, R. Kainuma
Journal of Alloys and Compounds   737 490-504   Mar 2018
© 2017 Elsevier B.V. A critical determination of a phase diagram of the Zn-Fe binary system was carried out by EPMA analysis for skillfully prepared and equilibrated two-phase alloys for solid phases and by EDS areal analysis for the Fe solubility...
Takehito Hagisawa, Toshihiro Omori, Ikuo Ohnuma, Ryosuke Kainuma, Kiyohito Ishida
Materials Transactions   59 188-197   Jan 2018
© 2018 The Japan Institute of Metals and Materials. Recrystallization, grain growth, and particle ripening behaviors of pre-deformed Fe-In alloy specimens in liquid-particle dispersion microstructures were investigated by microstructural observati...
K. Niitsu, K. Minakuchi, X. Xu, M. Nagasako, I. Ohnuma, T. Tanigaki, Y. Murakami, Y. Murakami, D. Shindo, D. Shindo, R. Kainuma
Acta Materialia   122 166-177   Jan 2017
© 2016 Acta Materialia Inc. The atomic arrangement and microsegregation in the vicinity of thermally induced antiphase boundaries in a Ni50Mn20In30Heusler alloy are investigated through multislice simulations, high-angle annular dark-field scannin...
K. Han, I. Ohnuma, R. Kainuma
Journal of Alloys and Compounds   668 97-106   May 2016
© 2016 Elsevier B.V. Al-rich portion of the Al–Fe binary phase diagram was determined by conventional heat-treatment for equilibration, the diffusion couple method and thermal analysis. Equilibrium compositions are mostly coincident with the gener...

Books etc

 
Effect of the Interaction between the Chemical and the Magnetic Ordering on the Phase Equilibria of Iron-base Alloys
2002   
鉄鋼材料,金属便覧改訂6版
2000   
分散組織及び2相混合組織における結晶粒成長、「再結晶・集合組織とその組織制御への応用」
1999   
材料開発における状態図の利用、日本金属学会セミナ-
1998   
炭化物分散浸炭法による高強度鋼の試作、鉄鋼の高強度化と信頼性向上
1997   

Conference Activities & Talks

 
Development of Thermodynamic Database for Cu-base Alloy Systems and Micro-Solders
CALPHADXXXVIII   2009   
銅基合金の熱力学データベースの開発とその応用
日本金属学会2009年春期大会   2009   
Development of Thermodynamic Database for Cu-base Alloy Systems and Micro-Solders
TMS Annual Meeting & Exhibition   2009   
Microstructural Evolution of Alloy Powder for Electronic Materials with Liquid Miscibility Gap
2008NCMS   2008   
Microstructural Evolution of Alloy Powder for Electronic Materials with Liquid Miscibility Gap
CALPHADXXXVII   2008   

Works

 
液相2相分離を利用した新しいタイプのPbフリー高温はんだ合金の開発
2006 - 2008
液相2相分離を利用した新しいタイプのPbフリー高温はんだ合金の開発
2003 - 2006

Patents

 
導電性複合粉末およびその製造方法
特開2009-68086
水素ガス発生部材及びその水素ガス製造方法
特開2009-51714
パワー半導体モジュール
特開2008-270353
接合体
特開2008-72006
パワー半導体モジュール
特開2007-281412