文献类型：期刊文献

英文题名：Effect of Overlaying Welding Repair on Stress Corrosion Cracking Sensitivity of Low-Pressure Nuclear Steam Turbine Rotor in the Simulated Environment

作者：Huang, Yuhui[1];Song, Ming-Yuan[1];Xuan, Fu-Zhen[1];Weng, Shuo[2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[2]Univ Shanghai Sci & Technol, Sch Mech Engn, Shanghai 200093, Peoples R China

年份：2023

卷号：32

期号：5

起止页码：2205

外文期刊名：JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE

收录：;EI(收录号：20223612680221);WOS:【SCI-EXPANDED(收录号:WOS:000844429400007)】；

基金：This work was financially sponsored by National Natural Science Foundation of China (Grant No. 51875202).

语种：英文

外文关键词：overlaying welding repair; stress corrosion cracking sensitivity; welded joints

摘要：Slow strain rate test (SSRT) was applied to investigate stress corrosion cracking (SCC) behavior of 25Cr2Ni2MoV overlaying welding joints in the simulated environment of low-pressure nuclear steam turbine. Results revealed that the overlaying weld metal (WM) away from the fusion line had the highest SCC susceptibility compared with the base metal (BM), heat affect zone (HAZ) and weld metal (WM) near the fusion line. The lower SCC susceptibility of WM away from fusion line was probably attributed to the decreasing of Cr content and the existence of coarse bainite in WM, furthermore, the mechanical difference was caused by the proportion of high angle of the grain boundary.