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《Hot Working Technology》 2012-02
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Effects of Rare Earth Addition on Grain Refinement of Magnesium Alloy

YUAN Fuqing,ZHANG Jing,FANG Chao(National Engineering Research Center for Magnesium Alloys,College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China)  
The grain refinement performance and mechanism of rare-earth(RE) addition in magnesium alloys were reviewed by analysing the existing form and efficiency of various RE,including Ce,Nd,Y,Er and Sc.The results show that the grain size of magnesium alloys could be refined by a certain amount of Re additon.The optimum amount for the grain refinement is determined by the solid solubility of RE in Mg matrix.The critical value of RE addition increases with the solid solubility of Mg in Mg alloy.
【Fund】: 重庆市杰出青年科学基金项目(CSTC 2008BA4036);; 重庆市科技攻关项目(CSTC 2009AB4007);; 重庆大学大型设备开放基金项目(CDJXS10131159)
【CateGory Index】: TG146.22
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