摘要
采用粉末冶金法制备了三种SiC体积分数分别为25%、30%、35%的SiC/6061Al基复合材料。利用金相显微镜观察材料的显微组织,检测材料的物理性能和力学性能,运用Turner、Kerner理论模型对复合材料的热膨胀系数进行分析,研究SiC含量对复合材料组织和性能的影响。结果表明:随着SiC含量的增加,增强体出现团聚倾向,复合材料的致密度和热膨胀系数均降低;复合材料的抗拉强度随着SiC的增多先增大后降低,成非线性关系。
The SiC/6061A1 composites according to three volume fraction of SiC （25% ,30%, 35%） were produced by powder metallurgy method. The mierostructures of the materials were observed by Optical Microscope, and the physical properties and tensile strength were also examined. Turner and Kerner theoretical models were employed to analyse the coeffi- cients of thermal expansion. The effect of SiC volume fraction on properties of SiC/6061A1 composites was investigated. The results showed that the densifieation and coefficients of thermal expansion decreased with increasing the volume fraction of SiC; while the tensile strength first increased and then decreased according to a nolinear relationship.
出处
《粉末冶金工业》
CAS
北大核心
2013年第5期30-34,共5页
Powder Metallurgy Industry
基金
国家自然科学基金资助项目(51371077)
