The medium W content W–Ni–Fe alloys have a combination of high strength and great ductility, revealing a promising future for widespread engineering applications. In order to fabricate medium W content W–Ni–Fe alloys with outstanding performances, W nano-powders prepared by a two-stage reduction method was employed as raw material. Meanwhile, the finely dispersed Al₂O₃ particles have effective roles in restraining the growth of W grain. Electron back-scattered diffraction analysis identified that fine W grains were uniformly distributed in the γ matrix phase without any observable texture. Benefitting from the combination of fine-grain strengthening, oxide dispersion strengthening and precipitation strengthening, a highest tensile strength of 816 ± 11 MPa and a greatest elongation of 29.7 ± 1.2% are obtained for the sintered alloys of 75 W–1Al₂O₃ and 50 W, respectively. It is also concluded that the main fracture modes of the currently manufactured alloys are ductile matrix rupture and W-matrix interface separation.

W含量中等的W–Ni–Fe合金具有高强度和出色的延展性，为广泛的工程应用显示了广阔的前景。为了制造具有优异性能的中等W含量的W-Ni-Fe合金，采用两步还原法制备的W纳米粉体为原料。同时，细分散的Al ₂ O ₃颗粒在抑制钨晶粒的生长方面具有有效的作用。电子背散射衍射分析表明，细小的W晶粒均匀地分布在γ基质相中，没有任何可观察到的织构。受益于细晶粒强化，氧化物弥散强化和沉淀强化的结合，对于75 W–1Al ₂ O ₃和90 W的烧结合金，可获得最高的拉伸强度816±11 MPa和最大的伸长率29.7±1.2％。分别为50W。还得出结论，当前制造的合金的主要断裂模式是韧性基体断裂和W-基体界面分离。