In this study, Inconel 625 superalloy matrix composite materials were produced via powder metallurgy by using high-purity elemental powders and wolfram carbide (WC) reinforcement. The powder mixtures were shaped by applying 500 MPa pressure. The sintering process was carried out at 1275 °C under argon atmosphere with 90 min holding time. The densities of the produced samples were determined according to Archimedes’ principle. The microstructural characterization was performed by X-ray diffraction analysis, scanning electron microscope examinations, and energy-dispersive spectrometry analyses. Hardness measurements and tensile tests were used to determine the mechanical properties. Increasing the degree of WC reinforcement improved the sinterability of the Inconel 625 alloy and allowed obtaining higher densities. Microstructural examinations revealed that the composite materials were composed of fine and coaxial grains and large carbides homogeneously dispersed in the microstructure. The hardness and strength of the composites increased with increasing WC reinforcement.

中文翻译：

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WC-Reinforced Inconel 625 高温合金基复合材料

在这项研究中，Inconel 625 高温合金基复合材料是通过粉末冶金法生产的，使用高纯度元素粉末和碳化钨 (WC) 增强材料。通过施加 500 MPa 压力使粉末混合物成型。烧结过程在 1275°C 氩气气氛下进行，保温时间为 90 分钟。根据阿基米德原理确定所生产样品的密度。通过 X 射线衍射分析、扫描电子显微镜检查和能量色散光谱分析进行微观结构表征。硬度测量和拉伸试验用于确定机械性能。增加 WC 增强程度提高了 Inconel 625 合金的可烧结性并允许获得更高的密度。显微组织检查表明，复合材料由细小的同轴晶粒和均匀分散在微观结构中的大碳化物组成。复合材料的硬度和强度随着WC增强的增加而增加。