In this work, ultrafine-grained W_f/WCu composites have been developed in this work using skeleton pre-sintering at respective 1050 °C, 1150 °C, 1250 °C and 1350 °C followed by infiltration under a reductive hydrogen atmosphere. The resulted microstructure including sinterability, grain orientation distribution and phase constituents, the resulted mechanical properties including microhardness and compressive behaviors, as well as the resulted electrical properties including electrical conductivity and high-voltage arcing resistant behaviors were systematically investigated in comparison. Results revealed that the composite pre-sintered at 1250 °C exhibited the best comprehensive properties including the highest hardness of 659 HV_0.05 for W_f and 267 HV_0.05 for WCu matrix, the highest compressive strength of 1004.6 MPa with pronounced deformation plasticity of 25.8%, as well as a good electrical conductivity of 24.4 %IACS and the highest electrical breakdown strength of 6.80 × 10⁷ V/m.

在这项工作中，超细晶粒 W _f /WCu 复合材料已在本工作中使用骨架预烧结分别在 1050°C、1150°C、1250°C 和 1350°C，然后在还原性氢气气氛下渗透。系统研究了所得微观结构包括烧结性、晶粒取向分布和相组成，所得力学性能包括显微硬度和压缩行为，以及所得电性能包括导电性和耐高压电弧行为。结果表明，在 1250 ℃预烧结的复合材料综合性能最好，其中W _f和 267 HV的最高硬度为 659 HV _{0.05WCu基体为0.05}，最高抗压强度为1004.6 MPa，显着变形塑性为25.8%，良好的导电率为24.4 %IACS，最高的电击穿强度为6.80×10 ⁷  V/m。