Role of water chemistry and microstructure in stress corrosion cracking in the fusion boundary region of an Alloy 182-A533B low alloy steel dissimilar weld joint in high temperature water

被引：74
作者：
Peng, Qunjia [1 ,2 ]
Xue, He [3 ]
Hou, Juan [1 ]
Sakaguchi, Kazuhiko [1 ]
Takeda, Yoichi [1 ]
Kuniya, Jiro [1 ]
Shoji, Tetsuo [1 ]
机构：
[1] Tohoku Univ, Fracture & Reliabil Res Inst, Grad Sch Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan
[2] Chinese Acad Sci, State Key Lab Corros & Protect, Inst Met Res, Shenyang 110016, Peoples R China
[3] Xian Univ Sci & Technol, Sch Mech Engn, Xian 710054, Peoples R China
来源：
CORROSION SCIENCE | 2011年 / 53卷 / 12期
关键词：
Low alloy steel; Alloy; SEM; TEM; Stress corrosion; Welding; ENVIRONMENTALLY-ASSISTED CRACKING; NICKEL-BASE ALLOYS; STAINLESS-STEEL; SUSCEPTIBILITY; PROPERTY;
D O I：
10.1016/j.corsci.2011.08.046
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Stress corrosion cracking (SCC) in the fusion boundary (FB) region of an Alloy 182-low alloy steel (LAS) dissimilar weld joint in 288 C water was investigated by experiments and finite element simulation. Creviced bent beam and crack growth rate (CGR) experiments showed that, while the FB was a barrier to SCC growth, further crack growth into LAS was activated by a combined effect of sulfate and dissolved oxygen in water. Finite element simulation suggested that a positive gradient of hardness as the crack approached to the FB in dilution zone caused decreased CGR. Role of microstructure and water chemistry in SCC was discussed. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4309 / 4317
页数：9
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