真空实型铸造钢基表面复合材料的耐磨冲击性能研究  

A Test Study of Grain-wearing and Impact Properties of a Steel Matrix Composite Material by Vacuum Infiltration Casting

作　　者：邵建敏[1] 刘建秀[1] 刘永军[1] 朱志强[1] 宁向可[1] 

机构地区：[1]郑州轻工业学院机电工程学院,郑州450002

出　　处：《机械科学与技术》2008年第12期1633-1636,共4页Mechanical Science and Technology for Aerospace Engineering

基　　金：河南省重点科技攻关项目(03230239000)资助

摘　　要：测试了真空实型铸造工艺制备的碳化硅颗粒增强钢基表面复合材料的耐磨性能和冲击力学性能。结果表明钢基表面复合材料的耐磨性优于基体,磨损系数大于基体;在应变率为600 s-1时,冲击应力比基体高约70 MPa。微观组织分析表明,增强碳化硅颗粒在基体中粒形基本保持完整,分布均匀,且基体与复合层之间没有明显的边界,说明两者的结合强度较高,起到了传递载荷和减缓冲击的作用。We carry out tests for determining the grain wear and impact mechanical properties of strengthened steel matrix surface composite material by vacuum infiltration process to seep SiC grain. The wearability of steel matrix composite material is better than the matrix obviously, its wear coefficient is larger than the matrix. At the strain rate of 600/s, the impact stress of the steel matrix composite material is larger than the matrix by 70 MPa. By analyzing the microscopic organization of composite material, we find that the SiC grain dissolves firmly in the surface organization of matrix material. SiC grain keeps integrity in shape, and the distribution is even. There is no obvious intermediate zone between the compound layer and the matrix. This kind of gently transitional overall performance is favorable for composite material, which can raise the combination strength on interface and play the part of transmiring load and slowing down impact.

关 键 词：真空实型铸造 钢基表面复合材料 磨损 冲击 

分 类 号：TB331[一般工业技术—材料科学与工程]