Effect of Ca addition on the as-cast microstructure and creep properties of Mg-5Zn-5Sn magnesium alloy
来源期刊：Rare Metals2009年第6期
论文作者：YANG Mingboa, b, CHENG Lianga, SHEN Jiaa, and PAN Fushengb a Materials Science and Engineering College, Chongqing University of Technology, Chongqing , China b Materials Science and Engineering College, Chongqing University, Chongqing , China
文章页码：576 - 581
摘 要：The effect of Ca addition on the as-cast microstructure and creep properties of Mg-5Zn-5Sn magnesium alloy was investigated. The results indicate that adding 1.0 wt.% Ca to Mg-5Zn-5Sn alloy can effectively refine the as-cast microstructure of the alloy, and the CaMgSn phase with high thermal stability is formed in the alloy. In addition, adding 1.0 wt.% Ca to Mg-5Zn-5Sn alloy can also improve the creep properties of the alloy. After adding 1.0 wt.% Ca to Mg-5Zn-5Sn alloy, the second creep rate of the alloy at 150°C and 50 MPa for 100 h decreases from 4.67×10-8 to 1.43×10-8 s-1. The strengthening mechanism is mainly attributed to the microstructural refinement and the formation of CaMgSn phase.
YANG Mingboa, b, CHENG Lianga, SHEN Jiaa, and PAN Fushengb a Materials Science and Engineering College, Chongqing University of Technology, Chongqing 400050, China b Materials Science and Engineering College, Chongqing University, Chongqing 400030, China
摘 要：The effect of Ca addition on the as-cast microstructure and creep properties of Mg-5Zn-5Sn magnesium alloy was investigated. The results indicate that adding 1.0 wt.% Ca to Mg-5Zn-5Sn alloy can effectively refine the as-cast microstructure of the alloy, and the CaMgSn phase with high thermal stability is formed in the alloy. In addition, adding 1.0 wt.% Ca to Mg-5Zn-5Sn alloy can also improve the creep properties of the alloy. After adding 1.0 wt.% Ca to Mg-5Zn-5Sn alloy, the second creep rate of the alloy at 150°C and 50 MPa for 100 h decreases from 4.67×10-8 to 1.43×10-8 s-1. The strengthening mechanism is mainly attributed to the microstructural refinement and the formation of CaMgSn phase.
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