熔盐堆用镍基合金失效机理与改性策略研究进展

王优, 陈向阳, 王煦嘉, 汤春桃, 沈朝, 曾小勤

Progress in Failure Mechanisms and Modification Strategies of Nickel-Based Alloys for Molten Salt Reactors

WANG You, CHEN Xiangyang, WANG Xujia, TANG Chuntao, SHEN Zhao, ZENG Xiaoqin

图6 第二相/基体界面对材料耐腐蚀、抗辐照性能的作用机制[60,62,64]

Fig.6 Mechanisms of the secondary phase/matrix interface in enhancing corrosion and irradiation resistances[60,62,64] (a1, a2) Cr adsorption and diffusion blocking (Fig.6a2 shows the Cr-rich shell around the particle marked by the circle in Fig.6a1)[60] (b) helium bubble suppression[64] (c1, c2) microstructures of NiMoCr-oxide dispersion strengthened (ODS) alloy after irradiation and molten salt exposure at different magnifications (Yellow circles mark grain boundary areas, and red circles indicate matrix regions)[62]