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采用高能球磨法制备了W-40Cu超细晶复合粉体,继而进行了放电等离子烧结(SPS),获得了致密的超细晶W-40Cu块体复合材料,着重研究了烧结温度对复合材料组织和性能的影响。结果表明,随着烧结温度升高,材料的致密度、硬度和电导率也随之升高;在950℃烧结5min的W-40Cu复合材料,W颗粒尺寸约300～500nm,相对致密度达98%,显微硬度HV为287,电导率为17.9MS/m。
W-40Cu ultrafine-grained composite powders were prepared by high-energy ball milling, followed by spark plasma sintering (SPS) to obtain dense ultrafine grained W-40Cu bulk composites. The effects of sintering temperature on the microstructures of the composites And the impact of performance. The results show that the density, hardness and electrical conductivity of the W-40Cu composites increase with the increase of the sintering temperature. The W-40Cu composites sintered at 950 ℃ for 5min have a relative grain size of about 300-500nm and a relative density of 98 %, Microhardness HV 287, conductivity 17.9MS / m.