Effects of processing parameters on the LPBF-deposited AlSi10Mg/SiCp composite: microstructure and mechanical properties

Adding SiC particle (SiC p ) to Al alloys to form Al/SiC p composite can increase the elastic modulus and reduce the thermal expansion coefficient of the material. In this study, the microstructure, porosity and thermal expansion coefficient, and mechanical properties of AlSi10Mg-10 vol.% SiC p composite fabricated by laser powder bed fusion (LPBF) were investigated. The ultimate tensile strength, compressive strength, compressive modulus, and the thermal expansion coefficient of LPBF-deposited AlSi10Mg/SiC p composite are 351, 861.9 MPa, 121.9 GPa and 18.23 × 10 −6 °C −1 , respectively. The results demonstrate that the use of the E v equation to evaluate the effect of LPBF parameters on mechanical properties and relative density of the composites is accurate when only one parameter changes in the E v equation.