Al₂Ti₃V₂ZrB/2024Al composites were prepared by powder metallurgy.The effects of ball milling process and sintering temperature on the microstructure and hardness of the composites were investigated.The results reveal that ball milling process has a significant effect on the microstructure of Al₂Ti₃V₂ZrB/2024Al composites.With increasing in milling speed or milling time,the agglomeration of Al₂Ti₃V₂ZrB particles can be observed,which can affect the microstructure uniformity of the composites.Under the optimized balling condition of ball milling speed of 150 r/min for 5 h,the composites with the highest hardness present the desirable uniform distribution of Al₂Ti₃V₂ZrB particles in 2024Al matrix.The sintering temperature can control the distribution of Al₂Ti₃V₂ZrB and hardness of Al₂Ti₃V₂ZrB/2024Al composites also.When the sintering temperature is lower than 510℃,the uniform distribution of Al₂Ti₃V₂ZrB particles in 2024Al matrix can be realized,and the density and hardness of the composites are increased gradually with the sintering temperature increase.With the sinteriung temperature more than 510℃,the Al₂Ti₃V₂ZrB particles tends to be aggregated,leading to the decrease of density and hardness of the composites.The Al₂Ti₃V₂ZrB/2024Al composites prepared at 510℃have the highest hardness.