论文部分内容阅读
采用机械球磨混粉和真空烧结相结合的方法制备了Fe-Cu-Mo-C合金,研究了不同烧结温度对粉末冶金Fe-Cu-Mo-C合金材料的显微组织、密度、抗拉强度和摩擦磨损性能的影响。结果表明:随着烧结温度由1 000℃升高到1 100℃,Fe-Cu-Mo-C合金烧结体组织孔隙数量减少、孔隙尺寸明显降低;当烧结温度提高到1 150℃时,烧结体组织中孔隙尺寸增大。随着烧结温度升高,烧结体的密度、硬度、抗拉强度和伸长率先增大后减小,磨损量先降低后升高。最佳烧结温度为1 100℃,此时烧结体的密度为6.90 g/cm3,抗拉强度为319 MPa,洛氏硬度为34.7 HRC,磨损量为0.087 g。
Fe-Cu-Mo-C alloy was prepared by a combination of mechanical milling and vacuum sintering. The effects of sintering temperature on microstructure, density and tensile strength of Fe-Cu-Mo-C alloy powder metallurgy And friction and wear properties. The results show that as the sintering temperature increases from 1 000 ℃ to 1 100 ℃, the number of pores in the Fe-Cu-Mo-C alloy decreases and the pore size decreases obviously. When the sintering temperature increases to 1 150 ℃, the sintered compact Tissue pore size increases. With the increase of the sintering temperature, the density, hardness, tensile strength and elongation of the sintered body first increase and then decrease, the wear amount first decreases and then increases. The optimum sintering temperature is 1100 ℃. At this time, the density of the sintered body is 6.90 g / cm3, the tensile strength is 319 MPa, the Rockwell hardness is 34.7 HRC and the wear amount is 0.087 g.