[2G19-22] Reactor Pressure Vessel Steel 2

6:20 PM - 6:35 PM JST(9:20 AM - 9:35 AM UTC)

[2G22] Ni-Si-Mn Precipitates in Reactor Pressure Vessel SteelsConsistency between Existing Experimental Results and the Latest Calculation Phase Diagram

*Yoshitaka Matsukawa¹, Hideki Yuya², Akira Takeuchi³, Kazunori Morishita⁴, Masatake Yamaguchi⁵, Hiroaki Muta⁶, Ryuta Kasada⁷, Kenta Yoshida⁷, Minako Yoshikawa² (1. Kumamoto Univ., 2. Chubu Electric Power Inc., 3. Univ. of Hyogo, 4. Kyoto Univ., 5. JAEA, 6. Osaka Univ., 7. Tohoku Univ.)

Keywords:

light water reactors,reactor pressure vessel steels,embrittlement,lifetime prediction,precipitation,phase diagram

軽水炉圧力容器鋼におけるNi-Si-Mn析出物に関して、既往研究の実験結果（主に照射誘起析出物）と最新の熱力学データベースを用いた計算状態図（Thermo-calc 2025a, TCFE14, TCNI12）の整合性をレビューする。