Abstract In this paper, a new preparation method of metal matrix composites is presented. The W/FeNiMnAlW high-entropy alloy (HEA) matrix composite materials have been prepared by a simple and efficient technology. The HEA matrix consists of a face-centered cubic (FCC) phase, an ordered body-centered cubic (BCC) phase and W2C phase. The volume fraction and average grain size of the reinforcing phase W particles, uniformly distributed in the microstructure of HEA matrix, are 30.9% and 13.57 μm, respectively. Good metallurgical bonding between W particle and matrix is achieved, and the formation mechanism of near spherical tungsten particles is discussed, and the density of the composites is 10.55 g/cm3. The hardness of W-phase, B2 phase and FCC phase was 681.48 HV, 533.82 HV and 286.70 HV, respectively. The yield strength (σ0.2) of the W/FeNiMnAlW composites is 1241 MPa, the maximum compressive strength (σmax) and the maximum plastic strain (ep) are over 2530 MPa and 15% respectively, which showed superior mechanical properties. The effective combination of FCC phase and ordered BCC phase and the uniform distribution of W particles without edges are the main reasons for its good mechanical properties. The volume wear loss and wear rate of the W/FeNiMnAlW composites are respectively 0.42 mm3 and 4.95×10-3 mm3/N·m, and the worn mechanism is mainly adhesive wear and abrasive wear.

中文翻译：

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原位反应制备钨粒子增强高熵合金基复合材料

摘要 本文提出了一种新的金属基复合材料的制备方法。W/FeNiMnAlW高熵合金(HEA)基复合材料采用简单高效的工艺制备。HEA 基体由面心立方 (FCC) 相、有序体心立方 (BCC) 相和 W2C 相组成。均匀分布在 HEA 基体微观结构中的增强相 W 颗粒的体积分数和平均晶粒尺寸分别为 30.9% 和 13.57 μm。W粒子与基体之间实现了良好的冶金结合，讨论了近球形钨粒子的形成机理，复合材料的密度为10.55 g/cm3。W相、B2相和FCC相的硬度分别为681.48 HV、533.82 HV和286.70 HV。屈服强度 (σ0. 2) W/FeNiMnAlW 复合材料的强度为 1241 MPa，最大压缩强度 (σmax) 和最大塑性应变 (ep) 分别超过 2530 MPa 和 15%，显示出优异的机械性能。FCC 相与有序 BCC 相的有效结合以及 W 颗粒无边缘的均匀分布是其良好力学性能的主要原因。W/FeNiMnAlW复合材料的体积磨损量和磨损率分别为0.42 mm3和4.95×10-3 mm3/N·m，磨损机制主要为粘着磨损和磨粒磨损。FCC 相与有序 BCC 相的有效结合以及 W 颗粒无边缘的均匀分布是其良好力学性能的主要原因。W/FeNiMnAlW复合材料的体积磨损量和磨损率分别为0.42 mm3和4.95×10-3 mm3/N·m，磨损机制主要为粘着磨损和磨粒磨损。FCC 相与有序 BCC 相的有效结合以及 W 粒子无边缘的均匀分布是其良好力学性能的主要原因。W/FeNiMnAlW复合材料的体积磨损量和磨损率分别为0.42 mm3和4.95×10-3 mm3/N·m，磨损机制主要为粘着磨损和磨粒磨损。