ZHANG Zhen-yan,PENG Li-ming,ZENG Xiao-qin,DING Wen-jiang 1.National Engineering Research Center of Light Alloy Net Forming,Shanghai Jiao Tong University,Shanghai 200240,China,2.State Key Laboratory of Metal Matrix Composites
Abstract:
The effects of Cu and Mn additions on mechanical properties and damping capacity of Mg-Cu-Mn alloy were investigated.The tensile properties and damping capacity at room temperature of as-cast Mg-Cu-Mn alloy were tested. The microstructure was model were used to explain the influences of Cu and Mn additions on the tensile properties and damping capacity of Mg-Cu-Mn alloy. The results show that Cu and Mn additions remarkably reduce the grain size of Mg-Cu-Mn alloy, but have little influence on phase composition and solute atoms concentration, the tensile properties increase obviously and the internal friction of Mg-Cu-Mn alloy decreases with grain refining.