Enhancing stress corrosion cracking resistance of machined surface via surface mechanical grinding treatment for AISI 316 L stainless steel

被引：27

作者：

Yang, Chongwen ^{[1
]}

Jiang, Xinli ^{[1
]}

Zhang, Wenqian ^{[2
]}

Wang, Xuelin ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, Wuhan 430074, Peoples R China

[2] Hubei Univ Technol, Sch Mech Engn, Hubei Key Lab Modern Mfg Qual Engn, Wuhan 430068, Peoples R China

来源：

MATERIALS CHARACTERIZATION | 2022年 / 194卷

基金：

中国国家自然科学基金;

关键词：

Stress corrosion cracking; Surface mechanical grinding treatment; Surface stress; Microstructure; Stainless steel; RESIDUAL-STRESS; TENSILE PROPERTIES; FATIGUE BEHAVIOR; MICRO-HARDNESS; MICROSTRUCTURE; EVOLUTION; ALLOY; GRAIN; SCC; INITIATION;

D O I：

10.1016/j.matchar.2022.112493

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The mechanical properties, microstructures and corrosion resistance of turned, milled and surface mechanical grinding treatment (SMGT) processed surfaces were investigated through the surface stress measurement, microhardness, SEM, TEM, TKD, XRD and electrochemical corrosion analysis. The stress corrosion cracking (SCC) initiation behavior of three types of treated surfaces in boiling MgCl2 solution were assessed and compared. The experimental results indicated that the SMGT processed surface inhibited the SCC initiation at the surface stress as high as 874 MPa. The enhancement of SCC resistance was attributed to the SMGT-induced dense ultrafine-grained (UFG) layer, gradient grain refinement and better corrosion resistance, resulting in the high yield strength and high critical stress of SCC initiation.

引用

页数：13

共 45 条

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