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Effects of Gd addition on as-cast microstructure and mechanical properties of Mg-3Sn-2Ca magnesium alloy

机译：Gd对Mg-3Sn-2Ca镁合金铸态组织和力学性能的影响

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摘要

In the paper, the effects of Gd addition on the as-cast microstructure and mechanical properties of the Mg-3Sn-2Ca magnesium alloy were investigated. The results indicate that after adding 0.42-1.79 wt.%Gd to the Mg-3Sn-2Ca alloy the GdMgSn phase is formed, and the primary CaMgSn phases are changed from coarse needle-like net to relatively fine short block and/or particle-like shapes. Furthermore, an increase in Gd amount from 0.42 wt.% to 1.79 wt.% causes the volume fraction of the CaMgSn and Mg2Ca phases to gradually decrease and increase, respectively. In addition, adding 0.42 wt.%, 0.88 wt.% or 1.79 wt.%Gd to the Mg-3Sn-2Ca alloy can improve the tensile and creep properties of the alloy. Among the Gd-containing Mg-3Sn-2Ca alloys, the alloy added 0.42 wt.%Gd exhibits the best tensile properties while the alloy added 1.79wt.%Gd has the best creep properties.
机译：研究了添加Gd对Mg-3Sn-2Ca镁合金铸态组织和力学性能的影响。结果表明，在Mg-3Sn-2Ca合金中添加0.42-1.79 wt。％Gd之后，形成了GdMgSn相，并且主要的CaMgSn相从粗针状网变为相对细的短块和/或颗粒-像形状。此外，Gd量从0.42重量％增加到1.79重量％导致CaMgSn相和Mg2Ca相的体积分数分别逐渐减小和增大。另外，向Mg-3Sn-2Ca合金中添加0.42重量％，0.88重量％或1.79重量％的Gd可以改善合金的拉伸和蠕变性能。在含Gd的Mg-3Sn-2Ca合金中，添加0.42wt。％Gd的合金表现出最好的拉伸性能，而添加1.79wt。％Gd的合金具有最好的蠕变性能。

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  • 来源
    《Materials Science and Engineering》 |2011年第3期|p.1721-1726|共6页
  • 作者

    Mingbo Yang; Yi Zhu; Xiaofeng Liang; Fusheng Pan;

  • 作者单位

    Materials Science and Engineering College, Chongqing University of Technology, No. 4 Xingsheng Road, Yangjiaping, Chongqing 400050, China,National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400030, China,Key Laboratory of Automobile Components Manufacturing and Testing Technology of the Education Ministry, Chongqing University of Technology, Chongqing 400050, China;

    Materials Science and Engineering College, Chongqing University of Technology, No. 4 Xingsheng Road, Yangjiaping, Chongqing 400050, China;

    Materials Science and Engineering College, Chongqing University of Technology, No. 4 Xingsheng Road, Yangjiaping, Chongqing 400050, China;

    National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400030, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    magnesium alloy; Mg-3Sn-2Ca alloy; Gd addition; CaMgsn phase;

    机译：镁合金Mg-3Sn-2Ca合金;d除;CaMgsn相;

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