Enhancing wear resistance of Mg-Zn-Gd alloy by cryogenic treatment

被引：36

作者：

Liu, Yong ^{[2
]}

Shao, Shuang ^{[2
]}

Xu, Chunshui ^{[2
]}

Yang, Xiangjie ^{[2
]}

Lu, Deping ^{[1
]}

机构：

[1] Jiangxi Acad Sci, Jiangxi Key Lab Adv Copper & Tungsten Mat, Nanchang 330029, Peoples R China

[2] Nanchang Univ, Dept Mat Proc Engn, Nanchang 330031, Peoples R China

来源：

MATERIALS LETTERS | 2012年 / 76卷

基金：

中国国家自然科学基金;

关键词：

Magnesium alloy; Cryogenic treatment; Wear resistance; Friction coefficient; Precipitation; MAGNESIUM ALLOY; GRAIN-SIZE; BEHAVIOR; MICROSTRUCTURE; ALUMINUM;

D O I：

10.1016/j.matlet.2012.02.072

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The wear behavior of Mg-1.5Zn-0.15Gd alloy before and after cryogenic treatment (CT) has been investigated by dry sliding wear test and scanning electron microscope (SEM). The experimental result shows that the wear resistance of the alloys has been significantly improved after CT. The observation worn surface indicates that abrasive wear is the main wear mechanism of Mg-1.5Zn-0.15Gd alloy. The friction coefficient and wear rate decrease with the increase of CT duration, which is attributed to the increase of volume fraction of the secondary phase particles and its refinement due to the CT. Moreover, the alloy after cryogenic treatment exhibits a much smoother worn surface. The wear mechanism of the alloy before and after CT has been discussed. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：201 / 204

页数：4

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