Role of welding residual strain and ductility dip cracking on corrosion fatigue behavior of Alloy 52/52M dissimilar metal weld in borated and lithiated high-temperature water

被引：14
|
作者：
Gao, Jun [1 ,2 ]
Tan, Jibo [1 ]
Jiao, Ming [3 ]
Wu, Xinqiang [1 ]
Tang, Lichen [3 ]
Huang, Yifeng [3 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Liaoning Key Lab Safety & Assessment Tech Nucl Ma, Shenyang 110016, Peoples R China
[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
[3] Shanghai Nucl Engn Res & Design Inst, Shanghai 200233, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2020年 / 42卷
基金：
中国国家自然科学基金;
关键词：
Superalloys; Corrosion fatigue; High temperature corrosion; Welding; ENVIRONMENTALLY ASSISTED CRACKING; NICKEL-ALLOYS; INITIATION; STEAM; MICROSTRUCTURE; MECHANISMS; INCLUSION; GROWTH; STEEL;
D O I：
10.1016/j.jmst.2019.10.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Corrosion fatigue behavior of Alloy 52/52M dissimilar metal weld (DMW) was investigated in borated and lithiated high-temperature water. The fatigue life of Alloy 52/52M DMW in high-temperature water decreased in comparison with that in air. The fatigue cracks initiated at Alloy 52M butt weld or at the interface of Alloy 52 buttering and Alloy 52M butt weld. The welding residual strain and ductility dip cracking in Alloy 52M butt weld promoted the initiation and propagation of fatigue cracks. The environmentally assisted fatigue damage in high-temperature water is discussed by taking account of microstructure defects. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
引用
收藏
页码：163 / 174
页数：12
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