[P] P323~P356

[P355] Effects of Supersaturation and Cooling Rate on the Formation of Multimodal Microstructures in Ni-based Alloys

*YEEUN CHO¹, HIROMU HISAZAWA², TATSUYA OKADA² (1. Graduate School of Sciences and Technology for Innovation Tokushima University, 2. Faculty of Science and Technology Tokushima University)

Keywords:

Ni基合金 Ni-based alloy,マルチモーダル組織 Multimodal microstructure,γ′相析出 γ′ phase precipitation,過飽和度 Supersaturation,冷却速度 Cooling rate,析出バースト Precipitation Burst

Ni基合金のマルチモーダル組織形成に及ぼす過飽和度・冷却速度・Ti添加の影響を単純合金で解析し，各因子がγ′相の粒径や分布に複雑に作用し，多様な析出挙動が確認された．