Recently, Ti–Al intermetallic compound-reinforced Al matrix composites have attracted increasing attention because of their high specific modulus, strength, and thermal stability. In this study, blended powders of Ti and Al were ball milled and fabricated to in situ Ti–Al intermetallic compound-reinforced Al matrix composites by cold-pressing and hot-pressing sintering. The microstructures and component of core–shell-like structure in reinforcement were observed and analyzed. Material properties including hardness, density, and compression performance were tested and analyzed according to experimental processes. The results indicate that the time point of compression in hot-pressing sintering is crucial to obtain the closed core–shell-like structures. Based on the orthogonal experimental data, entropy methods and technique for order preference by similarity to ideal solution were combined to select the process parameters (ratio of Ti and Al, milling time, sintering temperature, holding time, and compaction pressure) for the best comprehensive performance of Vickers hardness and compressive yield strength.

最近，Ti-Al金属间化合物增强的Al基复合材料由于其高的比模量，强度和热稳定性而引起了越来越多的关注。在这项研究中，将Ti和Al的混合粉末球磨并通过冷压和热压烧结原位制备Ti-Al金属间化合物增强的Al基复合材料。观察并分析了增强中核-壳状结构的微观结构和组成。根据实验过程测试和分析了包括硬度，密度和压缩性能在内的材料特性。结果表明，在热压烧结中压缩的时间点对于获得闭合的核-壳状结构至关重要。根据正交实验数据，