[G] Nuclear Materials

[132] Fracture Toughness of the G-phase

*Yuichi Araki¹, Yoshitaka Matsukawa⁵, Daiki Wtanabe¹, Riku Takao¹, Tsunehiko Hmazato¹, Masayuki Tsushida⁵, Takateru Yamamuro⁵, Koichi Harada², Ryuta Kasada², Kiyohiro Yabuuchi³, Fumihiro Nakamori⁴ (1. Kumamoto University, 2. Tohoku University, 3. Kyoto University, 4. Osaka University, 5. Kumamoto University)

Keywords:G-phase、Fracture toughness、Reactor material

The fracture toughness of the intermetallic compound "G-phase" that embrittles the pressure vessel of a nuclear reactor was investigated by the Vickers hardness test.