▎ 摘　　要

Graphene/AlSi10Mg composites were fabricated using selective laser melting. Analysis of the microstructure of the graphene/ AlSi10Mg composites indicated that the graphene was uniformly dispersed and the size of the cell and the nano-Si precipitates were significantly reduced. The addition of graphene decreased the cell size of the composite since the inhibition of the movement of the cell boundary and increased the cell nucleation rate. Graphene also increased the nucleation rate of the nano-Si precipitates in the cell thereby decreasing the size of it.