热挤压对Al_2O_3p/6061铝基复合材料拉伸性能及组织的影响  

Influence of Hot Extrusion on Mechanical Properties and Microstructure of Al_2O_(3p)/6061 Composite

作　　者：郭永良[1] 刘兴秋[1] 宁江利[1] 蒋大鸣[1] 

机构地区：[1]哈尔滨工业大学分析与测试中心,黑龙江哈尔滨150001

出　　处：《机械工程材料》2007年第3期65-67,共3页Materials For Mechanical Engineering

摘　　要：采用挤压铸造法制备了体积分数为30%的Al_2O_3p/6061铝基复合材料,进行了挤压比为10:1的热挤压,对铸态和挤压态复合材料进行了常温拉伸试验,用光学显微镜和透射电镜对变形前后的显微组织进行了观察。结果表明:热挤压改善了材料的组织,提高了材料的力学性能。30vol%A Al2O3p/6061 composite was hot extruded in ratio of 10 ： 1 successfully. Tensile tests were performed to as-cast and extruded Al2O3p/6061 composite at room temperature. And raicrostructures were observed by optical microscope and TEM. It is show that the mechanical properties and microstructure are obviously improved by hot extrusion.

关 键 词：Al2O3p/6061复合材料 热挤压 力学性能 微观组织 

分 类 号：TB331[一般工业技术—材料科学与工程]