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    LIU Yu, LONG Si-yuan, TAO Jun. Solidification Behavior and Microstructure Evolution of AZ81 Magnesium Alloy[J]. Materials and Mechanical Engineering, 2013, 37(4): 10-13.
    Citation: LIU Yu, LONG Si-yuan, TAO Jun. Solidification Behavior and Microstructure Evolution of AZ81 Magnesium Alloy[J]. Materials and Mechanical Engineering, 2013, 37(4): 10-13.

    Solidification Behavior and Microstructure Evolution of AZ81 Magnesium Alloy

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    • Received Date: December 17, 2012
    • The phase transition temperature points of AZ81 magnesium alloy were measured by differential thermal analysis experiments, and the microstructure at phase transition points was obtained through liquid quenching method. The solidification behavior and microstructure evolution were analysed by optical microscopy, scanning electron microscopy and energy disperse spectroscopy. The results show that the solid-liquid phase transition temperature and eutectic transition temperature of AZ81 magnesium alloy were about 590 ℃ and 420 ℃, respectively. During the solidification of AZ81 magnesium alloy, α-Mg dendrites would precipitate firstly, aluminum content increased at the forefront of solid-liquid interface, eutectic transformation of Al-rich residual liquid occured at dendrite clearance, and finally solidified to eutectic microstructure of α-Mg and β-Mg17Al12. Moreover, as the eutectic microstructure was few, nucleation and growth of eutectic α-Mg phase were often dependent on α-Mg primary phase, and divorced eutectic microstructure formed through pushing β-Mg17Al12dendrite to the grain boundary of α-Mg.
    • [1]
      MORDIKE B L, EBERT T. Magnesium properties-applications-potential[J].Materials Science Engineering A, 2001, 302(1): 37-45.
      [2]
      张小农, 张荻, 吴人洁.混杂增强镁合金复合材料的力学性能和阻尼性能[J].中国有色金属学报, 1998, 8(增1): 150-153.
      [3]
      张红菊. AZ系镁合金相变及凝固组织分析[D].重庆: 重庆大学, 2008.
      [4]
      朱浩, 周清.变形条件对AZ31镁合金塑性的影响[J].机械工程材料, 2009, 33(12): 1-3.
      [5]
      潘复生, 韩恩厚.高性能变形镁合金及加工技术[M].北京: 科学出版社, 2007.
      [6]
      刘生发, 黄尚宇, 徐萍. Ce对AZ91镁合金铸态组织细化的影响[J].金属学报, 2006, 42(4): 443-448.
      [7]
      陆昌伟.热分析质谱法[M].上海: 上海科学技术文献出版社, 2002: 43-129.
      [8]
      刘楚明, 朱秀荣, 周海涛. 镁合金相图集[M].长沙: 中南大学出版社, 2006: 4-5.
      [9]
      崔忠圻.金属学与热处理[M].北京: 机械工业出版社, 2000: 87-93.
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