【摘要】 对平均粒度为60μm的Fe-Ni-Cu-C合金粗粉进行了注射成形。分析了烧结温度、保温时间和烧结气氛对烧结件力学性能和微观组织的影响。结果表明,在1 225℃,保温1 h,H2和N2(体积分数)比为1∶3时得到的烧结件具有最好的力学性能,其抗拉强度为360 MPa,屈服强度为171MPa,硬度为54 HRB。更多还原

【Abstract】 Fe-Ni-Cu-C mixed powder by injection molding using coarser powder with the particle size of 60 μm was studied.The effect of sintering temperature,holding time and sintering atmosphere on the mechanical property and microstructure of the sintered part was also studied.Results indicated that the sintered part is provided with the best mechanical property when the proportion of H2 and N2 is 1∶3,the sintering temperature is 1 225 ℃ and the holding time is 1 h.The tensile strength of the sintered part is 360 MPa,its yield strength is 171 MPa and its hardness is 54 HRB.更多还原