文献类型：期刊文献

中文题名：疲劳损伤对核电汽轮机焊接转子接头应力腐蚀开裂敏感性的影响

英文题名：Effect of fatigue damage on stress corrosion cracking sensitivity of nuclear steam turbine welded joint

作者：黄毓晖[1];司晓法[1];翁硕[2];轩福贞[1]

机构：[1]华东理工大学,承压系统与安全教育部重点试验室,上海200237;[2]上海理工大学,上海200093

年份：2020

卷号：41

期号：4

起止页码：12

中文期刊名：焊接学报

外文期刊名：Transactions of The China Welding Institution

收录：CSTPCD;;EI(收录号：20203309044173);Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家自然科学基金资助项目(51875202)。

语种：中文

中文关键词：核电汽轮机转子;焊接接头;应力腐蚀;慢应变速率拉伸试验

外文关键词：nuclear steam turbine rotor;welded joint;stress corrosion;slow strain rate test

摘要：采用慢应变速率拉伸试验(SSRT)研究了不同程度疲劳损伤对核电汽轮机焊接转子接头应力腐蚀开裂敏感性的影响,利用扫描电子显微镜等观察手段讨论了疲劳损伤对汽轮机焊接接头应力腐蚀开裂敏感性和二次裂纹的作用机理.结果表明,疲劳损伤增强了核电汽轮机焊接转子接头应力腐蚀开裂敏感性.此外,疲劳损伤的作用使空气中试样的塑性提高而在腐蚀溶液中塑性降低,也影响了试样内部二次裂纹的产生和扩展.
The effect of fatigue damage on the stress corrosion cracking susceptibility of nuclear steam turbine welded rotor was studied by slow strain rate test(SSRT). The mechanism of fatigue damage on stress corrosion cracking susceptibility and secondary crack of nuclear steam turbine welded joint was discussed by scanning electron microscope(SEM). The results show that fatigue damage enhances the stress corrosion cracking susceptibility of welded joints. In addition, the fatigue damage increased the plasticity of the samples in the air and decreased the plasticity in the corrosion environment, furthermore, it affected the formation and propagation of the secondary cracks in the samples.