采用真空实型铸渗(V-EPC)工艺制备碳化钨颗粒增强铁基表层复合材料,观察并研究其基体组织和抗三体磨料磨损性能.结果表明,基体组织的变化对复合材料的磨损性能产生显著的影响,随着Cr含量的增大,复合材料基体组织中的碳化物含量增加,形貌由长条状向块状转变.而复合材料的三体磨料磨损性能随着Cr含量的增大呈增加趋势,与未添加Cr的表层复合材料相比,当基体中Cr含量为27.4％时,表层复合材料的三体磨料磨损性能提高了40.6％.Cr的添加可提高WCp/铁基表层复合材料三体磨料磨损性能的机制为双“阴影效应”和“支撑效应”的协同作用.
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