[1B01-07] Irradiated Material Behaviors

[1B05] Investigtion of irradiation hardening behavior of ion-irradiated F82H by micro-pillar compression test

*Ryuta Kasada¹, Riki Simura², Satoshi Konishi¹, Masami Ando³, Hiroyasu Tanigawa³ (1. Institute of Advanced Energy, Kyoto University, 2. Graduate School of Energy Science, Kyoto University, 3. QST)

Keywords:fusion reactor material, irradiation hardening, ion irradiation, micro-pillar compression test

The change in the mechanical strength of a reduced-activation ferritic steel F82H after self ion irradiation was investigated by the micro pillar compression test. The micropillar specimen was fabricated by processing to the ion irradiated sub-surface so as to have a diameter of 1 μm and a height of 2 μm by a focused ion beam processing apparatus. As a result, it was confirmed that the slip deformation in the pillar portion occurred of ion-irradiated
depth region, and the change in compressive strength after the ion irradiation can be obtained.