超高压力下通电烧结制备钨铁功能梯度材料

Fabrication of tungsten/iron functionally graded materials by resistance sintering under ultra-high pressure

摘要: 采用超高压力下通电烧结技术制备了钨体积分数为0%、25%、50%、75%和100%的钨铁功能梯度材料.研究了材料组分和工艺参数对W/Fe功能梯度材料的显微形貌及力学性能的影响.结果表明:当施加压力为9 GPa,通电功率为11 kW,通电时间60 s时可以获得相对密度大于98%的钨铁功能梯度材料,其组分分布与设计成分保持一致.

Abstract: ungsten/iron functionally graded materials(FGM),in which the volume fractions of tungsten are 0%,25%,50%,75% and 100% respectively,were produced by resistance sintering under ultra high pressure.The effects of components and preparation parameters on the microstructure and mechanical properties of W/Fe FGM were analyzed.It is shown that W/Fe FGM,whose relative density reaches more than 98%,can be obtained at a pressure of 9 GPa and an input power of 11 kW for 60s so that the elemental composition distribution is in agreement with the designed.