Wear behaviors of AISI 316L stainless steel with a gradient structured surface layer induced by laser shock peening

被引：8

作者：

Luo, Kaiyu ^{[1
]}

Xu, Shengkai ^{[1
]}

Xu, Lujie ^{[1
]}

Xing, Yu ^{[1
]}

Zhang, Hongmei ^{[1
]}

Wang, Changyu ^{[1
,2
]}

Lu, Jinzhong ^{[1
,2
]}

机构：

[1] Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Peoples R China

[2] Xuefu Rd 301, Zhenjiang 212013, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2024年 / 481卷

基金：

中国国家自然科学基金;

关键词：

Gradient structured surface; Laser shock peening; AISI 316 L stainless steel; Wear behavior; GRAIN-SIZE; RESIDUAL-STRESS; MICROSTRUCTURE; EVOLUTION; FRICTION; NANOCRYSTALLIZATION; DEFORMATION; HARDNESS; MARTENSITE; ROUGHNESS;

D O I：

10.1016/j.surfcoat.2024.130608

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A gradient structured (GS) surface layer was fabricated by laser shock peening (LSP) on an AISI 316 L stainless steel (SS), and its wear behavior was investigated. Results show that the GS layer contains ultrafine nanocrystalline, nanocrystalline, ultrafine grain and coarse sub-grain. The cross-sectional microhardness of GS 316 L SS showed a gradient, and the surface hardness reached 4.87 GPa, an increase of 70.99 %, resulting in a 41.4 % increase in wear resistance. The microstructure evolution after wear indicates that the surface structure of GS 316 L SS forms a hardened layer during wear, which in turn effectively resists the wear failure.

引用

页数：14

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