文献类型：期刊文献

英文题名：SCC fracture location shifting affected by stress-controlled fatigue damage of NiCrMoV steel welded joints

作者：Weng, Shuo[1,2,3];Huang, Yuhui[4];Si, Xiaofa[4];Xuan, Fu-zhen[4];Kang, Yun[1]

机构：[1]Univ Shanghai Sci & Technol, Sch Mech Engn, Shanghai 200093, Peoples R China;[2]Univ Shanghai Sci & Technol, Machinery Ind Key Lab Mech Strength & Reliabil Eva, Shanghai 200093, Peoples R China;[3]Shanghai Technol Serv Platform Reliabil Evaluat Ne, Shanghai 200093, Peoples R China;[4]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2022

卷号：21

起止页码：1534

外文期刊名：JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T

收录：;EI(收录号：20225213311177);WOS:【SCI-EXPANDED(收录号:WOS:000877047800005)】；

基金：Acknowledgments The work was sponsored by National Key R&D Program of China (Grant No. 2021YFC3001800) , the National Natural Science Foundation of China (Grant No. 51875202 and 52005336) , the Shanghai Sailing Program (19YF1434400) .

语种：英文

外文关键词：Welded joints; Stress-controlled fatigue damage; Stress corrosion cracking; Fracture location shifting

摘要：The influence of stress-controlled fatigue (SCF) damage on the fracture location shifting of welded joints for NiCrMoV steels in the corrosive solution of 3.5wt.% NaCl is systematically investigated by electrochemical measurements, immersion tests, slow strain rate tensile (SSRT) tests, and fractural morphology observations in the present work. The results show that both the yield strength (YS) and the ultimate tensile strength (UTS) of welded joints are increased after the SCF tests. The susceptibility of stress corrosion cracking (SCC) and galvanic corrosion of the SCF damaged welded joints are higher than that of the as -received specimens. In addition, the fracture locations of welded joints after SSRT tests in the corrosive solution are shifted with the degree of SCF damage. Different degrees of fatigue damage are accumulated in the three zones of welded joints during the cyclic deformation, which could change the competitive relation of the most susceptive SCC zone between the fusion zone and the middle of WM.(c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).