In this work, a new type of high entropy alloy (HEA) composite Fe₁₈Ni₂₃Co₂₅Cr₂₁Mo₈WNb₃C₂ was prepared by mechanical alloying (MA) and hot pressing sintering (HPS). Phase transitions, microstructure characteristics, and tensile properties of samples were analyzed. During the MA process, a powder mixture of Cr-Mo was milled to synthesize the amorphous alloy powder Cr(Mo)a. Then, the mixture of amorphous alloy powder Cr(Mo)a and other elemental powders (Fe, Ni, Co, W, Nb, and C) was milled to obtain the HEA powder. This HEA powder is composed of single-phase austenite ($\gamma$). Finally, the HEA powder was consolidated using HPS. The sintered HEA composite contains the matrix phase austenite A and second-phase M₆C carbide. The precipitation reaction that occurs during the sintering process can be summarized as: $\gamma$→A + M₆C. Tensile properties of the sample sintered at 1050 °C were tested. At room temperature, ultimate tensile strength and elongation are ~ 1452 MPa and ~ 3.9%, respectively; at 650 °C, ultimate tensile strength and elongation are ~ 795 MPa and ~ 13.3%, respectively.

在这项工作中，通过机械合金化（MA）和热压烧结（HPS）制备了一种新型的高熵合金（HEA）复合材料Fe ₁₈ Ni ₂₃ Co ₂₅ Cr ₂₁ Mo ₈ WNb ₃ C ₂。分析了样品的相变，微观结构特征和拉伸性能。在MA过程中，将Cr-Mo的粉末混合物研磨以合成非晶态合金粉末Cr（Mo）a。然后，将非晶态合金粉末Cr（Mo）a和其他元素粉末（Fe，Ni，Co，W，Nb和C）的混合物研磨，以获得HEA粉末。这种HEA粉末由单相奥氏体（$\gamma$）。最后，使用HPS固结HEA粉末。烧结的HEA复合材料包含基体相奥氏体A和第二相M ₆ C碳化物。烧结过程中发生的沉淀反应可总结为：$\gamma$→A + M ₆在1050烧结样品C.拉伸性能℃下进行了测试。在室温下，极限抗拉强度和伸长率分别为〜1452 MPa和〜3.9％。在650°C下，极限抗拉强度和伸长率分别为〜795 MPa和〜13.3％。