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研究了烧结温度及合金成分对合金的室温、高温力学性能以及合金成分对合金导电性能的影响。结果表明,对于含W90％(wt)、Ni:Fe为2:1的合金,在1450℃烧结保温1.5h,合金性能最好,Mo的加入有利于合金的强度、硬度及高温性能的提高,较好地改善了钨基合金砧块的综合性能。Mo有助于W晶粒的细化,它固溶到W相和粘结相中从而达到强化两相的目的。当两相的延性相差不大时,断口大多出现沿W —粘结相的界面断裂,W穿晶断裂数目有所减少。
The effects of sintering temperature and alloy composition on the mechanical properties of the alloy at room temperature and high temperature and the alloy composition on the electrical conductivity of the alloy were studied. The results show that for the alloy with W90% and Ni: Fe 2: 1, the alloy is sintered at 1450 ℃ for 1.5h, and the alloy has the best performance. The addition of Mo is beneficial to the improvement of strength, hardness and high temperature performance of the alloy. Better improved tungsten alloy anvil overall performance. Mo contributes to the grain refinement of W, which dissolves into the W phase and the binder phase to achieve the purpose of strengthening the two phases. When the ductility of two phases is not much different, the fractures mostly appear along the interface of W - binder phase, and the number of W transgranular fracture decreases.