A novel Ti₂AlC particle and in-situ TiAl₃ reinforced pure Al composites with different preparation temperature were fabricated by pressure-infiltration technique. The microstructure, phases and compressive strength of 45% Ti₂AlC–Al system composites were studied. Compress test and XRD results reveal that the composite consisting 50% TiAl₃ exhibits the best properties when the fabrication temperature was 1023 K. SEM results reveal that the presence of in-situ TiAl₃ phase can great influence the interface bonding status. After carefully controlling the interface structure, the composite showed excellent compressive strength (1250 MPa) and specific strength (385 MPa cm³/g) properties compared with other MAX-type or TiAl₃ reinforced Al composites. High temperature test demonstrated great strength and good ductility properties were maintained after heating above 773 K. Three strengthening mechanisms were discussed to characterize the mix-phase (Ti₂AlC + TiAl₃)/Al composites. The results indicate that high strength of in-situ TiAl₃ phase and good deformation ability of Ti₂AlC phase contribute to the improvement in compression behavior. This simple and efficient preparation method of MAX phase reinforced Al-based composite provides a new sight for high-performance metal matrix composites.

通过压力渗入技术制备了一种新型的Ti ₂ AlC颗粒和原位TiAl ₃增强纯铝复合材料。研究了45％Ti ₂ AlC–Al系复合材料的组织，相和抗压强度。压缩试验和XRD结果表明，当制造温度为1023 K时，由50％TiAl ₃组成的复合材料表现出最好的性能。SEM结果表明，原位TiAl ₃相的存在可以极大地影响界面键合状态。仔细控制界面结构后，复合材料显示出优异的抗压强度（1250 MPa）和比强度（385 MPa cm ^3）/ g）性能与其他MAX型或TiAl ₃增强的Al复合材料相比。高温试验表明，在773 K以上加热后，仍具有很高的强度和良好的延展性。讨论了三种强化机理来表征混合相（Ti ₂ AlC + TiAl ₃）/ Al复合材料。结果表明，高强度的原位TiAl ₃相和良好的Ti ₂ AlC相变形能力有助于改善压缩性能。MAX相增强Al基复合材料的这种简单有效的制备方法为高性能金属基复合材料提供了新的视野。