Stress corrosion cracking in the heat affected zone of a stainless steel 308L-316L weld joint in primary water

被引：70
作者：
Dong, Lijin [1 ,2 ]
Peng, Qunjia [1 ]
Han, En-Hou [1 ]
Ke, Wei [1 ]
Wang, Lei [2 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
[2] Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China
来源：
CORROSION SCIENCE | 2016年 / 107卷
基金：
中国国家自然科学基金;
关键词：
Stainless steel; SEM; TEM; Stress corrosion; Welding; HIGH-TEMPERATURE WATER; PWR PRIMARY WATER; LOW-ALLOY STEEL; GROWTH; MICROSTRUCTURE; ENVIRONMENT; CHEMISTRY; REGION; 690TT;
D O I：
10.1016/j.corsci.2016.02.030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Stress corrosion cracking (SCC) in the heat affected zone (HAZ) of a stainless steel 308L-316L weld joint in primary water of pressurized water reactor was investigated. Stress corrosion crack growth in the HAZ was observed in off-normal primary water chemistry with dissolved oxygen, but not in normal primary water chemistry with dissolved hydrogen. This suggests that it is unlikely a stress corrosion crack propagating in the HAZ could reach the fusion boundary and penetrate into the weld metal under normal primary water chemistry conditions. Microstructure analysis of the crack tip suggests that the SCC follows the slip-oxidation mechanism. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：172 / 181
页数：10
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