The microstructure and mechanical behavior of a Cr-Al-C composite rapidly consolidated by spark plasma sintering at a relatively low temperature of 900 °C were investigated. The sintered composite showed a multi-phase microstructure consisting of Cr₂AlC and Al₄C₃ in Cr₅Al₈ matrix, as confirmed by high intensity X-ray diffraction and transmission electron microscopy (TEM). The multi-phase composite showed high hardness of about 11 GPa, high compressive strength of up to 5.81 GPa and strain-to-failure of 1.76%–10.82% at room temperature. High resolution TEM revealed that the dislocation slip and kink bands within the Cr₂AlC MAX phase grains contribute significantly to the plasticity, whereas, the Cr₅Al₈ and Al₄C₃ improves the strength and hardness of the overall composite. These results highlight the importance of combining ceramic phases with intermetallic matrix for designing high-performance engineering materials.

研究了在 900 °C 相对较低的温度下通过放电等离子烧结快速固结 Cr-Al-C 复合材料的微观结构和力学行为。经高强度 X 射线衍射和透射电子显微镜 (TEM) 证实，烧结后的复合材料在 Cr ₅ Al _{8基体中显示出由 Cr 2} AlC 和 Al ₄ C ₃组成的多相微观结构。多相复合材料在室温下表现出约 11 GPa 的高硬度、高达 5.81 GPa 的高抗压强度和 1.76%–10.82% 的应变失效。高分辨率 TEM 揭示了 Cr _{2内的位错滑移和扭结带}AlC MAX 相晶粒对塑性有显着贡献，而 Cr ₅ Al ₈和 Al ₄ C ₃提高了整体复合材料的强度和硬度。这些结果凸显了将陶瓷相与金属间化合物基体相结合对于设计高性能工程材料的重要性。