摘要
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 alloys were prepared by mechanical milling and vacuum sintering. The effect of sintering temperature on the microstructure, density, tensile strength, friction and wear properties of the Fe-based powder metallurgy Fe-Cu-Mo-C was studied. Results show that the pores reduce and its size decreases when sintering tem- perature increases from 1 000 ℃ to 1 100 ℃ ; while the pore size increases when sintering temperature increases to 1 150 ℃. The relative density, hardness, tensile strength and elongation of the sintered body increase firstly and then decrease with the increase of sintering temperature. The mass wear of as-sintered sample decreases firstly and then increases with the increase of sintering temperature. The optimum performance is obtained for samples sintered at 1 100 ℃, with sintered density of 6.90 g/cm3, tensile strength of 319 MPa, hardness of 34.7 HRC and mass loss of 0.087 g.
出处
《粉末冶金工业》
CAS
北大核心
2016年第2期27-30,共4页
Powder Metallurgy Industry
基金
湖北省教育厅科学技术重点资助项目(D20141801)
湖北省自然科学基金资助项目(2014CFB627)
关键词
铁基合金
烧结温度
力学性能
iron-based alloy
sintering temperature
mechanical property
