The composite material powder was fabricated by physically mixing nano-WC and AlSi10 Mg

and a sample was prepared by using a selective laser melting forming machine. The performance of AlSi10 Mg and composite samples prepared by the same process were analyzed comparatively by optical microscope

scanning electron microscope

tensile test

etc.

and the influence of nano-WC on the formation and evolution of microstructure and the influence of the structure on mechanical properties were investigated. The results reveal that composite powder has good sphericity and uniform particle size distribution. The hardness and the yield strength

the tensile strength of the composite sample reach about 158.9 HV and 337.8 MPa

514.0 MPa

which have increased by 14.6%

4.73% and 6.3%

respectively

compared with those of the as-deposited ones.