Mg-1.3Mn-xCe-xZn镁合金显微组织和力学性能的研究

Research on Microstructures and Mechanical Properties of As-cast Mg-1.3Mn-x Ce-xZn Magnesium Alloy

以Mg-1.3Mn合金为基合金,添加质量分数为1.0％或者2.0％的Ce以及质量分数为2.0％～6.0％的Zn,进行多元合金化,研究Ce,Zn对Mg-1.3Mn合金显微组织和力学性能的影响.实验结果表明：在Mg-1.3Mn合金中,一定量Ce,Zn的加入不但能明显地细化晶粒,而且能提高实验合金的抗拉强度和硬度.Mg-1.3Mn-1.0Ce-xZn合金的室温拉伸断裂机理随着Zn含量的增加也将发生改变.

The effects of Ce and Zn addition on the microstructures and mechanical properties of Mg-1.3Mn-based alloys were studied.The Ce and Zn addition refined both the as-cast and the heat treatment grain structure of the Mg-1.3Mn alloy.Moreover,the tensile strength and Brinell-Hardness were enhanced.The fracture mechanism of Mg-1.3Mn-1.0Ce-xZn alloys changed with the increase of Zn addition.