Effect of fabrication parameters on carbon fibre reinforced magnesium matrix composite components

Carbon fibre reinforced magnesium matrix (C_f/Mg) composite components were made by liquid–solid extrusion process following vacuum infiltration technique. The effect of varying fabrication parameters (extrusion temperature, infiltration pressure and filling pressure) on the forming quality of C_f/Mg components was investigated. The experimental results showed that the extrusion temperature and the infiltration pressure played important roles, and the filling pressure played a secondary role. The components can be obtained at an extrusion temperature of 590°C, an infiltration pressure of 20 MPa and a filling pressure of 0.2 MPa. The ultimate tensile strength of the C_f/Mg composite components was 290 MPa, which was increased by 81% compared with that of casting AZ91D.