[P] P53~P61

[P54] Microstructures and mechanical properties of Ni-rich NiTi alloys near solubility limit

*KAI MATSUMOTO¹, Wan-Ting Chiu², Akira Umise², Masaki Tahara², Hideki Hosoda² (1. Graduate Student, Tokyo Tech, 2. Tokyo Institute of Technology)

Keywords:Ni-Ti、形状記憶合金、超弾性

55mol%程の高Ni濃度NiTi合金では第二相を含む合金の研究が多く，NiTi単相に関してはほとんど無い.そこで高Niで単相域に入る1100℃で溶体化処理,水焼入れを行い,Ni過剰組成のNiTi合金の組織と機械的性質を調べた.