|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Materials Science for High-Performance Permanent Magnets
||Phase Equilibria in the Nd-based Permanent Magnets
||Taichi Abe, Ikuo Ohnuma, Yoshinao Kobayashi, Ying Chen, Osamu Takeda
|On-Site Speaker (Planned)
Microstructural design/control is a key technology for development of the Nd-based permanent magnets, where thermodynamic calculations based on the CALPHAD methodology can have an important role. For Nd-Fe-B-based multi-component systems, we have been constructing a thermodynamic database to estimate phase equilibria between the Nd2Fe14B compound and various phases at grain boundaries. The present version of the database is still preliminary; the applicable composition ranges are limited to up several at.% of additives. We have intensively improved it to include oxygen and other key elements through the intensive collaborations.