In recent engineering applications, lightweight aluminium composites are becoming more popular as an alternative for ferrous metals. The high cost of component manufacture has kept particulate metal matrix composites from being widely used in engineering applications. The goal of this research is to characterize stir cast Al-7075/B4C/Si3N4 reinforced hybrid composites. Hard ceramic reinforcements increase the microstructure, mechanical, and wear qualities of the material. B₄C and ZrB₂ particles were incorporated into the Al matrix at different weight percents, such as 2, 4, 6, and 8. The microstructure, and properties of mechanical as well as wear of ZrB₂ and B₄C particle composition were examined. In addition, SEM and XRD were used to investigate the castings' morphology. As a result, hardness and strength rise as the amount of B₄C-ZrB₂ in the composite increases. The Al7075 + 8% B₄C + 1% ZrB₂ composite outperform all the considered composition. Furthermore, with increasing sliding distances, the specific wear rate increases and the coefficient of friction decreases. Because of its outstanding mechanical and wear properties, the hybrid Al7075-B₄C-ZrB₂ material is the excellent choice of upper wing requirements

Keywords: Al7075-B₄C-ZrB₂ hybrid composites, Wear properties, Microstructure, Compression test, Friction