Corrosion Behavior of GH3535 Alloy Induced by Selenium  

作　　者：Zhenyuan Zhu Fenfen Han Yanyan Jia Changying Wang Cuilan Ren Hanxun Qiu Xingtai Zhou 

机构地区：[1]University of Shanghai for Science and Technology,Shanghai 200093,China [2]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China [3]Changzhou Institute of Technology,Changzhou 213032,China

出　　处：《Acta Metallurgica Sinica(English Letters)》2023年第6期1047-1056,共10页金属学报（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China(Grant Nos.52071331,51901241,52001322).

摘　　要：Corrosion behavior of a Ni-16Mo-7Cr base superalloy was systematically investigated under a selenium(Se)atmosphere at 700°C.It shows that Se can react with the alloy elements such as Ni,Mo,Cr et al.to form a reaction layer at the surface of alloy,which is mainly composed of Ni_(2)Se_(3),MoSe_(2),and Cr_(3)Se_(4).The tensile properties of the alloy are not greatly affected by changes of Se content.The slight decrease in the tensile strength is attributed to the formation of the reaction layer,which leads to the decrease in the effective undertaking area of the alloy.No intergranular diffusion characteristic of Se elements was observed,and the Se effect of embrittlement on grain boundaries is weaker than that of tellurium(Te).

关 键 词：GH3535 alloy SELENIUM Fission product Intergranular embrittlement Molten salt reactor 

分 类 号：TL426[核科学技术—核技术及应用]