Effect of surface treatments on microstructure and stress corrosion cracking behavior of 308L weld metal in a primary pressurized water reactor environment

被引：16

作者：

Dong, Lijin ^{[1
]}

Zhang, Xiaolong ^{[1
]}

Han, Yaolei ^{[2
]}

Peng, Qunjia ^{[2
]}

Deng, Ping ^{[3
]}

Wang, Shuliang ^{[1
]}

机构：

[1] Southwest Petr Univ, Sch New Energy & Mat, Chengdu 610500, Peoples R China

[2] Suzhou Nucl Power Res Inst, Suzhou 215004, Peoples R China

[3] Nucl Power Inst China, Chengdu 610041, Peoples R China

来源：

CORROSION SCIENCE | 2020年 / 166卷

基金：

中国博士后科学基金;

关键词：

Stainless steel; SEM; TEM; Stress corrosion; Welding; AUSTENITIC STAINLESS-STEELS; DELTA-FERRITE; ALLOY; 600; INITIATION; OXIDATION; BOUNDARY; JOINT; SUSCEPTIBILITY; TESTS;

D O I：

10.1016/j.corsci.2020.108465

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effect of surface treatments on microstructure and stress corrosion cracking (SCC) of 308L weld metal in primary pressurized water reactor environment was evaluated by microstructure characterization and bent beam tests. The results showed that no SCC was observed on colloidal silica slurry polished surface while the change in composition and etched phase boundary promote SCC initiation after electropolishing. Further, milling and grinding produce a nanocrystalline layer and an underlying deformed layer on the surface. The nano-sized delta ferrite phase has a detrimental effect on SCC due to the synergistic effect of high concentration of dislocations and its nano size.

引用

页数：15

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