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T6热处理对Al+SiC预制颗粒增强ZL101/ZL101-Mg基复合材料组织和力学性能影响的研究
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
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- DOI:
- 作者:
- 张拓 游志勇 司耀强 蔡来强 高晶磊 张金山 蒋傲雪
ZHANG Tuo;YOU Zhiyong;SI Yaoqiang;CAI Laiqiang;GAO Jinglei;ZHANG Jinshan;JIANG Aoxue
- 作者单位:
- 太原理工大学材料科学与工程学院
College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China
- 关键词:
- 预制颗粒 复合材料 热处理 力学性能
prefabricated particles composites heat treatment mechanical properties
- 摘要:
- 通过半固态搅拌铸造的方法制备了Al+SiC预制颗粒增强ZL101基及ZL101-Mg基复合材料,研究了T6热处理对该复合材料微观组织及力学性能的影响。结果表明,T6热处理对Al+SiC预制颗粒增强ZL101基复合材料和Al+SiC预制颗粒增强ZL101+Mg基复合材料中SiC颗粒的分布没有明显影响。但T6热处理使Al+SiC预制颗粒增强ZL101复合材料中共晶硅细化,Al+SiC预制颗粒增强ZL101+Mg复合材料中共晶硅长大变粗。T6热处理对Al+SiC预制颗粒增强ZL101复合材料抗拉强度的平均提升率达到了54.44%,对其伸长率的平均提升率为5.47%。对Al+SiC预制颗粒增强ZL101+Mg复合材料抗拉强度的平均提升率为13.52%,对其伸长率的平均提升率为31.5%。
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.