WC颗粒增强对Fe-1.5Cu-1.8Ni-0.5Mo-1C粉末冶金复合材料的影响

Effect of WC particle reinforcement on Fe-1.5Cu-1.8Ni-0.5Mo-1C P/M composite

摘要: 制备了含有不同质量分数WC增强颗粒（0%、1%、2%、3%、4%、5%、6%、7%、8%、9%及10%）的Fe-1.5Cu-1.8Ni-0.5Mo-1C粉末冶金复合材料，分析了WC质量分数对复合材料显微组织、硬度与耐磨性能的影响。结果表明，在Fe-1.5Cu-1.8Ni-0.5Mo-1C材料中添加适量的WC颗粒可以提升复合材料的性能，尤其是耐磨性能。当WC颗粒的质量分数在1%~2%时，材料具有较好的组织结构与力学性能，相对于不添加WC增强颗粒的材料，含质量分数1%与2% WC增强颗粒的材料硬度（HRB）分别提升了12.9%和14.3%，磨损量分别降低了50%和52.1%。

Abstract: Fe-1.5Cu-1.8Ni-0.5Mo-1C powder metallurgy (P/M) composites added by WC reinforced particles in different mass fraction (0%, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%) were prepared. The effects of WC content on microstructures, hardness, and wear resistance of composites were analyzed. The results indicate that, WC reinforced particles can improve the mechanical properties of composites, especially the wear resistance. The specimen containing WC reinforced particles in the mass fraction of 1% to 2% show the better microstructures and mechanical properties. Compared with the specimens without WC particles, the hardness of composites containing 1% and 2% WC particles by mass is increased by 12.9% and 12.9%, respectively, and the abrasion loss is reduced by 50% and 52.1%, respectively.