Transactions of Materials and Heat Treatment

Title：Mechanical properties and damping capacity of AZ61 magnesium alloy matrix composites with SiC particulates

Authors： HU Qiang JIE Xiao-ping YAN Hong ZHANG Fa-yun CHEN Guo-xiang (Institute of Advanced Forming and Manufacturing and Die and Mold Nanchang University Nanchang 330031 China)

Unit：

KeyWords： stirring-melt casting magnesium matrix composites damping properties

ClassificationCode：TB331

year,vol(issue):pagenumber：2008,33(2):106-109

Abstract：

SiC particulate reinforced magnesium matrix composite SiCp/AZ61 was fabricated by using stirring-melt casting technique.The mechanical and the damping properties of the composites were studied by tensile test,dynamic mechanical thermal analysis and micro-structural observation.The results show that after introducing SiC particles,matrix grains were refined obviously at room temperature and the properties of magnesium matrix composites were improved comparison to AZ61 alloy.Meanwhile,the improvement of damping properties can be explained by G-L dislocation pinning theory.The damping characterization was explained with the increasing of quantities of the grainboundaries for the introducing of SiC particles,and the ease of interface slipping in high temperature.

Funds：

国家自然科学基金(50465003,50765005);; 江西省自然科学基金(2007GZC1826);; 江西省教育厅资助项目

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