Stress Corrosion Resistance of Laser Shock Peening/Microarc Oxidation Reconstruction Layer Fabricated on AZ80 Magnesium Alloy in Simulated Body Fluid

被引：13

作者：

Xiong, Ying ^{[1
,2
]}

Hu, Xiaxia ^{[1
,2
]}

Weng, Zeyu ^{[1
,2
]}

Song, Renguo ^{[3
]}

机构：

[1] Zhejiang Univ Technol, Coll Mech Engn, Hangzhou 310023, Peoples R China

[2] Zhejiang Univ Technol, Key Lab Special Purpose Equipment & Adv Proc Tech, Minist Educ & Zhejiang Prov, Hangzhou 310023, Peoples R China

[3] Changzhou Univ, Sch Mat Sci & Engn, Changzhou 213164, Peoples R China

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2020年 / 29卷 / 09期

基金：

中国国家自然科学基金;

关键词：

laser shock peening; magnesium; microarc oxidation; microstructure; stress corrosion; GRAIN-SIZE; IN-VITRO; CRACKING; BEHAVIOR; HYDROXYAPATITE; COATINGS; FILMS;

D O I：

10.1007/s11665-020-05076-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three types of surface treatments were performed on AZ80 magnesium (Mg) alloy by laser shock peening (LSP), microarc oxidation (MAO), and laser shock peening followed by microarc oxidation (LSP/MAO). The stress corrosion resistance of treated and untreated specimens was carried out using slow strain rate tensile testing at a strain rate of 5 x 10(-7)/s in simulated body fluid. The influence of microstructure on the stress corrosion behavior was analyzed by x-ray diffraction, transmission electron microscopy, scanning electron microscopy, and electrochemical measurement. The results showed that the LSP/MAO specimen has a higher stress corrosion resistance compared to the AZ80 Mg alloy substrate, the LSP-treated specimen, and the MAO-treated specimen. The factors improving the stress corrosion resistance of the LSP/MAO specimen are its nanocrystalline material, compressive residual stress, and favorable (0002) basal texture of its reconstructed layer.

引用

页码：5750 / 5756

页数：7

共 34 条

[1] Effects of grain size on the electrochemical corrosion behaviour of electrodeposited nanocrystalline Fe coatings in alkaline solution [J].