【摘 要】
：
In the present research, the Sb-alloying method was adopted, and the grain refinement and tensile. properties of as-cast Mg-10Zn-5AI alloys with varying Sb addi
【机 构】
：
College of Materials Science and Engineering
【基金项目】
：
High School Student Project of Taiyuan City;国家自然科学基金;山西省自然科学基金
论文部分内容阅读
In the present research, the Sb-alloying method was adopted, and the grain refinement and tensile. properties of as-cast Mg-10Zn-5AI alloys with varying Sb addition were investigated. The results showed that with the Sb addition, a new phase (Mg3Sb2) of high melting point forms in the alloy beside the α-Mg matrix, τ-Mg32(AI, Zn)49 phase and φ-Al2Mg6Zn2 phase. With an appropriate amount of Sb addition, the morphologies of the secondary phases and the matrix are changed and the grains are refined. When Sb addition is 0.6wt.%, both ambient and high temperature tensile strengths of the alloy reach their maximum. The hardness of the alloy increases with the increasing of Sb addition. With proper addition of Sb, the tensile failure mode of the alloy changes from cleavage fracture to quasi-cleavage fracture, showing good enhancement effect.
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