University-Industry Cooperation and Research Program Division,
Research Program Department,
Japan Society for the Promotion of Science (JSPS)
5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083, JAPAN

University-Industry Research Cooperation Societally Applied Scientific Linkage and Collaboration

University-Industry Cooperative Research Committees

172nd Committee on Alloy Phase Diagrams

Aims and Goals

Bringing together researchers involved in alloy phase diagrams at universities, national research institutes, and corporations, the committee pursues the continued improvement of the level of research in this field through academia-government-industry cooperation on everything from the basics of to applications for alloy phase diagrams. Activities include not only scientific publications and discussions but also discussions and exchanges of information in relation to the application and development of structural and functional materials.

Research Themes

1. Phase diagram research
(1) Theoretical phase diagram research (thermodynamic models, first principle calculation, and various simulations)
(2) Experimental determination of phase diagrams
(3) Phase diagrams of structural materials
(4) Phase diagrams of functional materials
(5) Microstructure evolutions related to phase diagrams
(6) Practical uses and applications of phase diagrams
2. Participation in the Alloy Phase Diagram International Commission (APDIC) and international cooperation
(1) International cooperation on compiling phase diagrams
(2) Participation in APDIC meetings
(3) Educational efforts related to phase diagrams and database constructions

Committee Chairperson

Hiroshi Ohtani
Tohoku University


April 2016 to March 2021 (Fourth term, Five years)

Membership Composition   (As of Apr.2017)

Academia: 66
Industry: 16
Total membership: 82

Committee Achievements and Special Activities

1. In addition to the conventional CALPHAD method, predicting thermodynamic properties based on first principle calculations and molecular dynamics simulations, as well as Monte Carlo methods has been progressing. Furthermore, research activities on the thermodynamic evaluation and calculation using the CALPHAD method combined with first-principles calculations are developing.

2. Simulations of microstructure evolution have come to be realized by the phase field method supported by phase diagram calculations. We can certainly expect that this can be applied to more systems in the future.

3. Committee members have compiled thermodynamic databases for calculating phase diagrams of sulfides and borides in steel, as well as of copper and solder alloys. Some of these databases have been commercialized and practically used in companies and universities.