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《Hot Working Technology》 2010-23
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Effect of Zr on Microstructure and Mechanical Property of As-cast Mg-7Gd-3Y Alloy

DONG Lijun,WU Anru,HE Jia,WANG Kenong(Dept.of Mechanical Engieering,Hunan Institute of Engineering,Xiangtan 411101,China)  
Mg-7Gd-3Y and Mg-7Gd-3Y-0.5Zr magnesium alloy were prepared under the combined protection of magnesium melting cover solvent and argon.The microstructure and mechanical properties of the alloy were analyzed by optical microscopy,X-ray diffraction analysis and tensile test.The effects of Zr on the grain size and room temperature tensile properties of the as-cast alloy were investigated.The results show that Zr addition can immensely refine the grain size,greatly enhance tensile strength and elongation percentage of the as-cast alloy.
【Fund】: 北京科技大学新金属材料国家重点实验室开放基金资助项目(2008Z-2);; 湖南省教育厅资助科研项目(10C0554)
【CateGory Index】: TG136.1
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