Influence of solidification conditions on mechanical properties of Mg-10Gd-3Y-0.5Zr magnesium alloy
Mg-10Gd-3Y-0.5Zr alloy was cast in a step-like mould with five different cooling rates.The as-cast microstructures of the different steps were examined with optical microscope(OM) and scanning electron microscope(SEM).The room temperature mechanical properties were examined by tensile test.The results show that the microstructures are refined and the second phase particles are distributed much uniformly with the increase of cooling rate.The increase of yield strength,ultimate strength and elongation can be ascribed mainly to the strengthening effect of fine grains.The relationship between grain size and yield strength/hardness agrees with the Hall-Petch behavior.
Mg-Gd-Y alloy solidification condition microstructure mechanical properties
LIN Jin-bao PENG Li-ming WANG Qu-dong ZHOU Yang DING Wen-jiang
National Engineering Research Center for Light Alloy Net Forming,Shanghai Jiao Tong University,Shang National Engineering Research Center for Light Alloy Net Forming,Shanghai Jiao Tong University,Shang
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）