[2G07-10] ブランケット材料

[2G09] Microstructural change in He-irradiated V-Cr-Ti alloys with low Ti addition

*ZOU YICHEN¹、福元 謙一²、石神 龍哉³、長坂 琢也⁴ (1. 福井大学大学院、2. 福井大学附属国際原子力工学研究所、3. 若狭湾エネルギー研究センター、4. 自然科学研究機構核融合科学研究所)

キーワード：バナジウム合金、照射硬化、He イオン照射、透過電子顕微鏡

In this study, to investigate the change in strength due to low Ti modification of V alloys and the effects of irradiation on strength and dimensional stability, He ion irradiation was performed on V alloys with varying impurity concentrations and Ti, Cr addition levels. Observations of the microstructure were made using a transmission electron microscope (TEM), and measurements of irradiation hardening were conducted using a nanoindentation hardness tester. The study aimed to obtain guidelines for the development of V alloys based on the correlation between microstructure and strength after irradiation.