In-situ TiC particulate reinforced CrMnFeCoNi_0.8 high entropy alloy (HEA) matrix composites were prepared by induction melting method. The effect of TiC content upon the microstructure and tensile properties of as-cast samples were analyzed and discussed. The HEA matrix has single-phase face-centered cubic (FCC) structure, determined by X-ray diffraction (XRD) pattern. Compared to the CrMnFeCoNi_0.8 matrix, 7.5 vol%TiC/CrMnFeCoNi_0.8 composite possessed remarkable yield strength (517.1 MPa vs 240.9 MPa), ultimate tensile strength (926.2 MPa vs 527.5 MPa) and excellent uniform elongation (38.0%). Strong dislocation interactions, load-bearing effect and Orowan mechanism afforded by in-situ TiC particles, together with solid-solution strengthening via C and Ti elements, are responsible for the strength enhancement.

采用感应熔化法制备了原位TiC颗粒增强CrMnFeCoNi _0.8高熵合金(HEA)基复合材料。分析讨论了TiC含量对铸态试样显微组织和拉伸性能的影响。HEA 基质具有单相面心立方 (FCC) 结构，由 X 射线衍射 (XRD) 图案确定。与 CrMnFeCoNi _0.8基体相比，7.5 vol%TiC/CrMnFeCoNi _0.8复合材料具有显着的屈服强度（517.1 MPa vs 240.9 MPa）、极限抗拉强度（926.2 MPa vs 527.5 MPa）和优异的均匀伸长率（38.0%）。原位 TiC 颗粒提供的强位错相互作用、承载效应和 Orowan 机制，以及通过 C 和 Ti 元素的固溶强化，是提高强度的原因。