Effect of annealing time on the microstructure and SCC behavior of an austenite-based low-density steel in a marine atmosphere

被引：27

作者：

Wu, Wei ^{[1
]}

Hong, You ^{[1
]}

Xu, Xuexu ^{[1
]}

Cheng, Huanlin ^{[1
]}

Liu, Zhiyong ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China

来源：

CORROSION SCIENCE | 2022年 / 205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：

Low-density steel; Stress corrosion; Marine atmosphere; B2; phase; Micro-galvanic effect; Electrochemistry; STRESS-CORROSION CRACKING; DUPLEX LIGHTWEIGHT STEELS; HYDROGEN-INDUCED CRACKING; X70 PIPELINE STEEL; MECHANICAL-PROPERTIES; E690; STEEL; ELECTROCHEMICAL CORROSION; PITTING CORROSION; 3.5-PERCENT NACL; STAINLESS-STEEL;

D O I：

10.1016/j.corsci.2022.110466

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure and stress corrosion cracking (SCC) behavior of the Fe-Mn-Al-C-Ni low-density steels (LDSs) with different annealing times were studied in a simulated marine atmosphere, and the relation between them was discussed. The results indicated that the SCC mechanism of the LDSs was a combination of anodic dissolution and hydrogen embrittlement. This behavior was greatly facilitated by a micro-galvanic corrosion effect between B2 phase and austenite. The SCC resistance of the LDSs increased gradually as the annealing time extended, attributing to the transformation of B2 band to B2 particle, the decrease in the potential difference, and the homogenization of the strain distribution.

引用

页数：14

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