Influence of cathodic polarization on stress corrosion cracking susceptibility of 35CrMo steel for high strength bolt in simulated deep-sea environment

被引：3

作者：

Zhao, Rongrong ^{[1
,2
]}

Xu, Likun ^{[1
,2
]}

Xin, Yonglei ^{[1
,2
]}

Xuan, Junji ^{[3
]}

Bai, Shuangfeng ^{[2
]}

Xue, Lili ^{[1
]}

Li, Li ^{[1
]}

Teng, Yizheng ^{[2
]}

Guo, Mingshuai ^{[1
,2
]}

Hou, Jian ^{[2
]}

Guo, Weimin ^{[2
]}

Li, Bingzhi ^{[2
]}

机构：

[1] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Harbin 150001, Peoples R China

[2] Luoyang Ship Mat Res Inst, Natl Key Lab Marine Corros & Protect, Qingdao 266237, Peoples R China

[3] Luoyang Ship Mat Res Inst, Luoyang 471023, Peoples R China

来源：

CORROSION SCIENCE | 2024年 / 233卷

关键词：

Low alloy steel (A); EIS (B); Cathodic protection (C); Hydrogen embrittlement (C); Stress corrosion (C); X70 PIPELINE STEEL; HYDROGEN EMBRITTLEMENT; HYDROSTATIC-PRESSURE; CALCAREOUS DEPOSITS; STAINLESS-STEEL; FRACTURE-BEHAVIOR; DELAYED FRACTURE; GRAIN-BOUNDARY; A514; STEEL; X65;

D O I：

10.1016/j.corsci.2024.112079

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of cathodic polarization on stress corrosion cracking (SCC) of 35CrMo steel for high strength bolt in the simulated deep-sea environment has been studied. The results show that 35CrMo steel has a higher SCC sensitivity at open circuit potential in the simulated deep-sea environment than that in the shallow seawater. With potential negatively shifted to -750 mV, 35CrMo steel presents the lowest SCC sensitivity. And the SCC susceptibility is increased significantly with the further negative shift of potential because of the intensive hydrogen evolution. When the potential is below -950 mV, hydrogen embrittlement with hydrogen-enhanced-plasticity mediated decohesion should be the dominant SCC micro-mechanism.

引用

页数：17

共 32 条

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