Influence of Sb modification on microstructures and mechanical properties of Mg₂Si/AM60 composites

来源期刊：中国有色金属学报(英文版)2010年增刊第2期

论文作者：闫洪 胡勇 吴孝泉

文章页码：411 - 415

Key words：Mg₂Si; Sb modification; magnesium matrix composites; heterogeneous nucleation; mechanical property

Abstract: The refining effect and mechanism of Sb on Mg₂Si and the microstructure of the matrix were investigated. The results indicate that there are Mg₃Sb₂ particles in the composites with the addition of Sb, and Mg₃Sb₂ can promote the formation of fine polygonal type Mg₂Si by providing nucleation site. Meanwhile, the grain size of Sb modified alloy is finer than that of the matrix. The improved microstructure results in the improvement of mechanical properties. The ultimate tensile strength is increased by 12.2% with the addition of 0.8% Sb.

基金信息：the National Natural Science Foundation of China