Microstructure, mechanical properties and fretting corrosion wear behavior of biomedical ZK60 Mg alloy treated by laser shock peening

被引：12
作者：
Wang, Gao-qi [1 ]
Wang, Shou-ren [1 ]
Yang, Xue-feng [1 ]
Wen, Dao-sheng [1 ]
Guo, Yu [1 ]
机构：
[1] Univ Jinan, Sch Mech Engn, Jinan 250022, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2023年 / 33卷 / 06期
基金：
中国国家自然科学基金;
关键词：
microstructure; mechanical properties; fretting corrosion wear; ZK60 magnesium alloy; laser shock peening; GRAIN-REFINEMENT MECHANISM; MAGNESIUM ALLOYS; RESISTANCE; BIOCOMPATIBILITY; SURFACE;
D O I：
10.1016/S1003-6326(23)66216-8
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
ZK60 magnesium alloy was treated with laser shock peening (LSP) technology at different laser energy densities. Fretting corrosion wear tests were conducted on the LSP-treated and untreated magnesium alloy samples in simulated body fluid condition. The microstructure, residual stress, surface hardness, tensile strength, and corrosion resistance were also tested to analyze their relationships with fretting corrosion wear behavior. Results showed that a maximum of 73.4% reduction of the fretting corrosion wear volume can be obtained by LSP treatment. The fine grain strengthening and the strain hardening caused by dislocation and twinning, and the compressive residual stress improve the surface hardness, tensile strength, and corrosion resistance at the same time, thus reducing the fretting corrosion wear.
引用
收藏
页码：1715 / 1728
页数：14
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