Effect of residual stress on the stress corrosion cracking in boiling magnesium chloride solution of austenite stainless steel

被引：13
|
作者：
Wu, Huanchun [1 ]
Li, Chengtao [1 ]
Fang, Kewei [1 ]
Zhang, Wenqian [2 ]
Xue, Fei [1 ]
Zhang, Guodong [1 ]
Wang, Xuelin [2 ]
机构：
[1] Suzhou Nucl Power Res Inst, Life Management Technol Ctr, Suzhou 215004, Peoples R China
[2] Huazhong Univ Sci & Technol, State Key Lab Digital Mfg Equipment & Technol, Sch Mech Sci & Engn, Wuhan 430074, Hubei, Peoples R China
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2018年 / 69卷 / 11期
基金：
美国国家科学基金会; 中国博士后科学基金;
关键词：
annealing treatment; intergranular corrosion susceptibility; residual stress; stress corrosion cracking; PWR PRIMARY WATER; SIGMA-PHASE; OXIDE-FILMS; COLD WORK; TEMPERATURE; BEHAVIOR; INITIATION; FATIGUE; 304L; EMBRITTLEMENT;
D O I：
10.1002/maco.201810201
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of residual stress on the stress corrosion cracking (SCC) behaviors of Z3CN20.09M, 304L and 316L austenitic stainless steels (SSs) in boiling magnesium chloride solution were investigated by X-ray diffraction, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The residual stress of surface and the hardness tested on the cross section of specimens induced by milling operation was decreased with increasing annealing temperature. The crack densities were also decreased with increasing annealing temperature of the specimens, and the SCC did not occur after annealed at 600 degrees C for 3 h except 316L SS when tested in boiling magnesium chloride solution. Crack initiation mechanism related to the damaged effect on grain boundary during milling operation was analyzed. The double loop electrochemical potentiokinetic reactivation (DL-EPR) tests indicated that the effect of annealing treatment up to 600 degrees C on intergranular (IG) corrosion susceptibility of 304L and 316L SSs was minor, while it remarkably increased of the Z3CN20.09M SS.
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页码：1572 / 1583
页数：12
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