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利用放电等离子烧结技术制备W-30Re合金,研究烧结温度对合金致密度、显微硬度、显微组织和断裂方式的影响。结果表明,利用放电等离子烧结技术可以在较短时间内制备出晶粒细小,组织均匀的高密度W-30Re合金。随着烧结温度的升高,合金的致密度与硬度不断增大,合金中粘结相的数量不断增加;合金的断裂方式由沿晶断裂转变为以沿晶断裂为主,以粘结相的延性撕裂为辅的断裂方式。
The W-30Re alloy was prepared by spark plasma sintering. The effects of sintering temperature on the alloy density, microhardness, microstructure and fracture mode were studied. The results show that the high-density W-30Re alloy with fine grains and uniform microstructure can be prepared by spark plasma sintering in a short period of time. With the increase of sintering temperature, the density and hardness of the alloy increase continuously, the number of the binder phase in the alloy increases continuously. The fracture mode of the alloy changes from intergranular fracture to intergranular fracture, Ductile tear supplemented by the fracture mode.