Corrosion of high-strength steel in 3.5% NaCl solution under hydrostatic pressure: Understanding electrochemical corrosion with tensile stress coupling

被引：20
|
作者：
Liu, Rui [1 ]
Song, Yushan [1 ]
Cui, Yu [2 ]
Meng, Fandi [1 ]
Liu, Li [1 ]
Wang, Fuhui [1 ]
机构：
[1] Northeastern Univ, Shenyang Natl Lab Mat Sci, 3-11 Wenhua Rd, Shenyang 110819, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Wencui Rd 62, Shenyang 110016, Peoples R China
来源：
CORROSION SCIENCE | 2023年 / 219卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Deep-sea corrosion; Hydrostatic pressure; Stress corrosion; High strength steel; LOCALIZED CORROSION; PITTING CORROSION; DOUBLE-LAYER; STAINLESS-STEEL; BEHAVIOR; ALLOY; MODEL; CR; NI; CAPACITANCE;
D O I：
10.1016/j.corsci.2023.111204
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Early corrosion of Ni-Cr-Mo-V high strength steel under hydrostatic pressure and tensile stress was investigated by microstructure characterization and electrochemical measurements. The main results show that plastic deformation has a double effect: -similar to the effect of hydrostatic pressure, the anodic current increases due to changes of the electrical double layer. This increase in current can be calculated by Gutman's theory; -the other effect is to damage the corrosion film coherent with the steel matrix. This synergism between plastic deformation and hydrostatic pressure further promotes the corrosion of Ni-CrMo-V alloy.
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页数：11
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