Effects of cerium on the microstructure and mechanical properties of Mg-16Zn-6Al magnesium alloy

Liu Xudong; Song Lihua; Zhao Hongliang; Guan Shaokang

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Effects of cerium on the microstructure and mechanical properties of Mg-16Zn-6Al magnesium alloy

Liu Xudong 1 *,Song Lihua 2,Zhao Hongliang 3,Guan Shaokang 3

1.Zhengzhou University,Zhengzhou 450002,PR China

2.Mayee Metal Technology(SuZhou)Co.,Ltd

3.School of Materials science and engineering, Zhengzhou University

*Correspondence author

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Funding: none

Opened online:20 May 2008

Accepted by: none

Citation: Liu Xudong,Song Lihua,Zhao Hongliang.Effects of cerium on the microstructure and mechanical properties of Mg-16Zn-6Al magnesium alloy[OL]. [20 May 2008] http://en.paper.edu.cn/en_releasepaper/content/21570

Mg-16Zn-6Al-xCe(x=0-1.2) alloy was prepared by metal mould casting method. Effects of Ce on the microstructure and mechanical properties of the alloys have been investigated. Microanalysis of specimens has revealed the presence of α-Mg phase(matrix) and one intermetallic compounds(τ-Mg32(Al,Zn)49 ) in the alloys. The dendrite as well as grain size were refined by the addition of Ce, and the best refinement was found in the alloys contained about 0.8% Ce. The addition of Ce improved the mechanical properties of the alloys,and the best mechanical properties were gained in the alloy contained about 0.8% Ce. The strengthening mechanism was attributed to grain refinement and compound reinforced.

Keywords:Mg-Zn-Al magnesium alloy; Cerium; Microstructure; Mechanical properties

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