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Effect of Gd addition on the wear behavior of Mg–xGd–3Y–0.5Zr alloys

Published online by Cambridge University Press:  05 April 2016

H.R. Jafari Nodooshan ,
Wencai Liu ,
Guohua Wu ,
Wenjiang Ding  and
R. Mahmudi
H.R. Jafari Nodooshan
Affiliation:
National Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, China
Wencai Liu
Affiliation:
National Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, China; and Shanghai Light Alloy Net Forming National Engineering Research Center Co., Ltd, Shanghai 201615, China
Guohua Wu*
Affiliation:
National Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, China
Wenjiang Ding
Affiliation:
National Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, China
R. Mahmudi
Affiliation:
School of Metallurgical and Materials Engineering, College of Engineering, University of Tehran, Tehran 11365–4563, Iran
*
a) Address all correspondence to this author. e-mail: ghwu@sjtu.edu.cn
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Abstract

The effects of different Gd additions on wear behavior of the T6 heat treated Mg–xGd–3Y–0.5Zr alloys were investigated. The wear tests were carried out using a Ball-on-flat type wear apparatus against an AISI 52100 type bearing steel ball counterface in the load range of 3–15 N, sliding speed range of 0.03–0.18 m/s, temperature range of 25–200 °C and at a constant sliding distance of 400 m. The results showed that the wear rate of the tested alloys increased with increasing sliding load. By increasing the wear temperature to 200 °C, the wear rate of the Mg–6Gd–3Y–0.5Zr alloy decreased by about 24%. At higher wear speeds, wear resistance of the alloys increased due to the formation of stable oxide layers on the worn surfaces. The alloy containing 12 wt% Gd exhibited higher wear resistance compared with the alloys containing lower Gd contents under the same conditions.

Keywords

Mg–Gd–Y–Zr alloywear characterizationhigh temperaturesliding speed

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Type
Articles
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Journal of Materials Research , Volume 31 , Issue 8 , 28 April 2016 , pp. 1133 - 1144
Copyright
Copyright © Materials Research Society 2016 

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