Decoupling the role of microstructure and geometric discontinuity introduced by weld reinforcement height on corrosion behavior of SA106B/ 316L SS welded joint in the flowing 0.5 M NaCl solution

被引：5
作者：
Zheng, Kexin [1 ,2 ]
Hu, Hongxiang [1 ]
Wang, Zhengbin [1 ]
Zheng, Yugui [1 ]
Zhao, Liang [3 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, 62 Wencui Rd, Shenyang 110016, Peoples R China
[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
[3] China Nucl Power Operat Management Co Ltd, Haiyan 314300, Peoples R China
来源：
CORROSION SCIENCE | 2024年 / 232卷
基金：
中国国家自然科学基金;
关键词：
A. Carbon steel; A. Stainless steel; B; Erosion; EIS; C; Welding; GALVANIC CORROSION; ACCELERATED CORROSION; MECHANICAL-PROPERTIES; STAINLESS-STEELS; FILMS; PROTECTION; ELECTRODE; PIPELINE; IRON;
D O I：
10.1016/j.corsci.2024.112046
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The flow -influenced corrosion (FIC) behavior of SA106B/316L stainless steel (SS) welded joints with SS located upstream and downstream is investigated experimentally and numerically. The damage components of microstructure heterogeneity and geometric discontinuity are quantified. The FIC of the welded joint is affected by the combination of galvanic corrosion, mass transfer, and charge transfer. The electrochemical measurements indicate that the corrosion is aggravated by a flow disturbance component of 18.70 similar to 26.96%. The corrosion of SA106B carbon steel is more severe than 52M and 316L SS due to galvanic effect, which is further promoted by flow disturbance. The FIC mechanism is also discussed.
引用
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页数：15
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