▎ 摘　　要

The graphene/Al composites were prepared by a selective laser melting technique. The effects of different graphene contents on the hardness and the tribological behaviour of the composites were investigated, and the wear mechanism of that was discussed. The experiment results showed that as the content of graphene increases, the hardness of the composites increased first and then decreased, and the hardness of AlSi10Mg-0.5 wt% graphene composite was about 10% higher than the hardness of AlSi10Mg alloy. The wear loss of the composites decreased first and then increased under the same conditions of experiment. The reason for the above phenomenon was that when the graphene content was too high, the graphene in the matrix could not be uniformly distributed causing holes, which led to a reduction in the relative density of the composites.