Study on the Influence of T6 Heat-treatment on the Microstructure and Mechanical Properties of the Al+SiC Precast Particles Reinforced ZL101/ZL101-Mg Matrix Composites
Author of the article:ZHANG Tuo;YOU Zhiyong;SI Yaoqiang;CAI Laiqiang;GAO Jinglei;ZHANG Jinshan;JIANG Aoxue
Author's Workplace：College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China
Key Words：prefabricated particles composites heat treatment mechanical properties
Abstract：The experiment manufactured the Al+SiC precast particles reinforced ZL101 and ZL101-Mg matrix composites by the semi-solid stirring casting,and researched the influence of T6 heat-treatment on the microstructure and mechanical properties of the composites.The result showed that the T6 heat-treatment have no obvious effect on the distribution of SiC particles in the Al+SiC precast particles reinforced ZL101 and ZL101+Mg matrix composites.However,the T6 heat-treatment refined the eutectic silicon in the Al+SiC precast particles reinforced ZL101 matrix composites,and coarsened the eutectic silicon in the Al+SiC precast particles reinforced ZL101+Mg matrix composites.The average increasing rate of tensile strength of Al+SiC precast particles reinforced ZL101 matrix composites reached 54.44%,and the average increasing rate of elongation reached 5.47% after T6 heat-treatment.And the average increasing rate of tensile strength of Al+SiC precast particles reinforced ZL101+Mg matrix composites reached 13.52%,and the average increasing rate of elongation reached 31.5% after T6 heat-treatment.
