[2J09-14] 照射効果

[2J11] より高いMn-Ni-Si濃度のRPVモデル合金の硬度と微細構造に対するイオン照射効果

*陳 心潤¹、Ruheine Naidu Chandren¹、Ba Vu Chinh Nguyen¹、村上 健太² (1. 長岡技術科学大学、2. 東京大学)

キーワード：高Mn-Ni-Si RPVモデル合金、イオン照射、硬化

To investigate the details of Mn-Ni-Si clusters evolution in reactor pressure vessel (RPV) steels, Fe-4.6wt.%Ni-1.7wt.%Mn-0.7wt.%Si alloys were irradiated by 2.8 MeV Fe ions at 573K up to 0.3 and 0.9 dpa at the dose rate of 10^-4 dpa/s. Average irradiation induced hardening of 1.6 and 2.8 GPa were observed using nanoindentation in different dose, respectively. In addition, Transmission Electron Microscope (TEM) and Atom Probe Tomography (APT) analysis are considered to be conducted to figure out the details of precipitation.