Microstructure and corrosion behaviour of laser surface melting treated WE43 magnesium alloy

被引：18

作者：

Liu, Cancan ^{[1
,2
]}

Li, Qingbiao ^{[1
,2
]}

Liang, Jun ^{[1
]}

Zhou, Jiansong ^{[1
]}

Wang, Lingqian ^{[1
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

RSC ADVANCES | 2016年 / 6卷 / 36期

基金：

中国国家自然科学基金;

关键词：

MG ALLOY; WEAR-RESISTANCE; AZ31B; AZ91D;

D O I：

10.1039/c5ra27010c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An attempt has been made to improve the corrosion behavior of WE43 magnesium alloy by laser surface melting (LSM) using a 10 kW continuous-wave CO2 laser. The microstructure evolution of WE43 alloy after LSM treatment was analyzed by using scanning electron microscopy, energy-dispersive spectroscopy and metallographic microscope. The corrosion resistance of specimens was assessed by electrochemical and immersion tests. Results showed that the LSM treated WE43 alloy presented a uniform microstructure with refined grains, enriched alloying elements and redistributed intermetallic compounds. The LSM treatment effectively improved corrosion resistance of WE43 alloy, which was mainly associated with enrichment of alloying elements in alpha-Mg matrix and uniform distributions of the refined Mg14Nd2Y phase.

引用

页码：30642 / 30651

页数：10

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