A Review on Casting Magnesium Alloys:Modification of Commercial Alloys and Development of New Alloys
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2016年第12期
论文作者：Fusheng Pan Mingbo Yang Xianhua Chen
文章页码：1211 - 1221
摘 要：The research and development status of casting magnesium alloys including the commercial casting alloys and the new types casting alloys are reviewed,with more attention to microstructure and mechanical properties of modified-AZ91,AM60 and WE43 alloys with various additions,and new types of low cost casting alloys and high strength casting alloys.The modification and/or refinement of Mg2 Si phase in Mg–Al–Si based casting alloys by various additions are discussed and new purifying technologies for casting magnesium alloys are introduced to improve the performance.The modified AZ81 alloy with reduced impurities is found to have the tensile strength of 280 ± 6 MPa and elongation of 16% ± 0.7%.The fatigue strength of AZ91 D alloy could be obviously improved by addition of Ce and Nd.The Mg–16Gd–2Ag–0.3Zr alloy exhibits very high tensile and yield strengths（UTS:423 MPa and YS:328 MPa）;however,its elongation still needs to be improved.
Fusheng Pan1,2，Mingbo Yang1,3，Xianhua Chen1
1. National Engineering Research Center for Magnesium Alloys (CCMg),Chongqing University2. Chongqing Academy of Science and Technology (CAST)3. College of Material Science and Engineering,Chongqing University of Technology
摘 要：The research and development status of casting magnesium alloys including the commercial casting alloys and the new types casting alloys are reviewed,with more attention to microstructure and mechanical properties of modified-AZ91,AM60 and WE43 alloys with various additions,and new types of low cost casting alloys and high strength casting alloys.The modification and/or refinement of Mg2 Si phase in Mg–Al–Si based casting alloys by various additions are discussed and new purifying technologies for casting magnesium alloys are introduced to improve the performance.The modified AZ81 alloy with reduced impurities is found to have the tensile strength of 280 ± 6 MPa and elongation of 16% ± 0.7%.The fatigue strength of AZ91 D alloy could be obviously improved by addition of Ce and Nd.The Mg–16Gd–2Ag–0.3Zr alloy exhibits very high tensile and yield strengths（UTS:423 MPa and YS:328 MPa）;however,its elongation still needs to be improved.
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