Microstructure and Properties of Mg-Based Quasicystal Particulate Reinforced Composite
The Mg-based quasicystal particle reinforced composite was prepared by conventional casting method in this paper. The matrix alloy was Mg-8Gd-3Y magnesium alloy and the reinforced-phase was Mg3Zn6Y quasicystal particles. SEM,TEM,XRD and tensile test at room temperatures were used to study the microstructures and properties of Mg-based quasicystal particulate reinforced composite. The analysis shows that the thick dendrite grAln in matrix alloy gradually changed into fine equiaxed grAlns with increase of the amount of quasicystal alloy added. Meanwhile network - shaped eutectic compound Mg24 (Y , Gd, Zn) 5 was formed and quasicrystal icosahedral phase with high stiffness and high stability was diffusively distributed in grAln boundary. The tensile strength, yield strength and elongation at room temperature of composite was also improved.
quasicrystal composite microstructure mechanical property
Wu Shiping Kang Huijun Guo Jingjie Wang Ye
School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China
国际会议
69th World Foundry Congress(第69届世界铸造会议 WFC 2010)
杭州
英文
477-482
2010-10-16（万方平台首次上网日期，不代表论文的发表时间）