Al

2

Ti

3

V

2

ZrB/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 Al

2

Ti

3

V

2

ZrB/2024Al composites.With increasing in milling speed or milling time

the agglomeration of Al

2

Ti

3

V

2

ZrB 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 Al

2

Ti

3

V

2

ZrB particles in 2024Al matrix.The sintering temperature can control the distribution of Al

2

Ti

3

V

2

ZrB and hardness of Al

2

Ti

3

V

2

ZrB/2024Al composites also.When the sintering temperature is lower than 510℃

the uniform distribution of Al

2

Ti

3

V

2

ZrB 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 Al

2

Ti

3

V

2

ZrB particles tends to be aggregated

leading to the decrease of density and hardness of the composites.The Al

2

Ti

3

V

2

ZrB/2024Al composites prepared at 510℃have the highest hardness.