Prediffused Fe-W powder with 2 wt% of tungsten was prepared by heating Fe-W powder mixes at 800°C for 45 min in H₂ atmosphere. Two kinds of Fe-2Cu-0.8C-0.6Mo-2W powder mixtures were obtained by mechanically mixing the prediffused Fe-W powders with the other elemental powders. After pressing and sintering, the sintered Fe-2Cu-0.8C-0.6Mo-2W materials were obtained from the two powder mixtures. The effects of the introducing methods of tungsten element and sintering conditions on microstructure, mechanical and wear properties of the sintered samples were investigated. The results show that with the increase of sintering temperature and time, hardness and strength of sintered samples increase. Prediffused treatment of Fe-W powder can improve density of green compacts and sintered samples. When W element introduced in the form of prediffused Fe-W powders, the compacts pressed at 700 MPa have a green density of 7.13 g/cm³, and after sintered at 1,150°C, the density, hardness, tensile strength and radial crushing strength of the sintered samples are 7.16 g/cm³, 95 HRB, 547 and 791 MPa, respectively, which are higher than those of the samples prepared from powder mixtures by mechanically mixing the elemental powders. Furthermore, the prediffused treatment of Fe-W powders can improve the distribution of W element and enhance wear resistance.

通过在H ₂中将Fe-W粉末混合物在800°C加热45分钟来制备具有2 wt％钨的预扩散Fe-W粉末大气层。通过将预扩散的Fe-W粉末与其他元素粉末机械混合，可以得到两种Fe-2Cu-0.8C-0.6Mo-2W粉末混合物。在压制和烧结之后，从两种粉末混合物获得烧结的Fe-2Cu-0.8C-0.6Mo-2W材料。研究了钨元素的引入方法和烧结条件对烧结样品组织，力学性能和磨损性能的影响。结果表明，随着烧结温度和时间的增加，烧结后样品的硬度和强度增加。Fe-W粉末的预扩散处理可以提高生坯和烧结样品的密度。当W元素以预扩散的Fe-W粉末形式引入时，在700 MPa下压制的压坯的生坯密度为7.13 g / cm ^3。，并烧结在1150℃时，密度，硬度，拉伸强度和烧结样品的径向压溃强度后是7.16克/厘米³，95 HRB，547和791兆帕，分别，它们比那些制备的样品的较高通过机械混合元素粉末从粉末混合物中提取。此外，Fe-W粉末的预扩散处理可以改善W元素的分布并提高耐磨性。