增强体颗粒预氧化对AlCuMgAg基复合材料强度与韧性影响  

Effect of Preoxidation Treatment of Particle Reinforce on Strength and Toughness of AlCuMgAg Matrix Composites

作　　者：肖代红[1] 

机构地区：[1]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《中国材料科技与设备》2008年第3期39-41,共3页Chinese Materials Science Technology & Equipment

基　　金：中南大学博士后科学基金

摘　　要：预先对增强体颗粒进行表面氧化处理，然后采用压铸浸渗法制备了体积分数为50％的SiC颗粒增强AlCuMgAg基复合材料。通过力学性能测试与扫描电镜观察，研究了SiC颗粒表面氧化处理对复合材料抗拉强度与韧性的影响。结果表明，适度的预氧化可以提高基体与颗粒之间的界面结合强度，使复合材料抗拉强度得到提高，但其韧性稍有下降。50 vol. % SiCp/Al-5.3Cu-0.8Mg-0. 6Ag composites billets were fabricated by squeeze pressurized infiltration. The effect of the preoxidation of SiC particle reinforce on the mechanical properties of the Al-5.3Cu-0.8Mg-0.6Ag alloy has been investigated using mechanical properties testing and scanning electron microscopy （SEM）. It was found that the ultimate tensile strength of the composites can be improved as a result of the appropriate preoxidation of SiC particle, however the toughness will be fall some little .

关 键 词：铝铜镁银基复合材料 增强体颗粒 预氧化 强度 韧性 

分 类 号：TG146.21[一般工业技术—材料科学与工程]