Cover Page June-2011-Advanced Materials Letters

Advanced Materials Letters

Volume 2, Issue 2, Pages 153-156, June 2011
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Creep resistance of a cast Mg-3Er-0.2Mn alloy

Wang Zhongjun*, Zhu Jing, Wang Zhaojing, Kang Baohua

School of Materials and Metallurgy, University of Science and Technology Liaoning, 185 Qianshan Zhong Road, Anshan 114051, P.R. China

Adv. Mater. Lett., 2011, 2 (2), pp 153-156

DOI: 10.5185/amlett.2010.12222

Publication Date (Web): Apr 08, 2012

E-mail: zhongjunwang@126.com

Abstract

In this paper, the microstructure and creep properties of a cast Mg-3Er-0.2Mn alloy was investigated. The results showed that the cast alloy under both as-cast and solution treated conditions is mainly composed of α-(Mg) matrix and Mg24Er5 phase particles. The value of activation energy Q (240~244KJ/mol), for creep deformation of the solution treated alloy, was calculated in the temperature range of 190~210 oC, and in the stress range of 50~60 MPa, respectively, which can explain that the creep mode involved cross slip of dislocations from basal to prismatic planes in the hexagonal structure or climb.

Keywords

Microstructure, creep properties, erbium, magnesium alloy.

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