Abstract:An extrusion directly following vacuum pressure infiltration technique was used to fabricate 2D-Cf/Al composite. When the specific pressure is 60~90 MPa, vacuum level is maintained at 10~30 kPa, squeeze infiltration temperature is 580~620 oC and keeping pressure time is 60~120 s, 2D-Cf/Al composite with ideal infiltration quality could be fabricated. Through microstructure observation, it is shown that the aluminum alloy is filled uniformly, and defects could be seldom found in composite. The experiment results indicate that the density of the composite is 17.9% lower than that of the matrix. Ultimate tensile strength of composite is satisfied, which is improved by 100% compared with that of matrix alloy. Heat treatment tests reveal the ultimate tensile strength is improved by 41%, because the microstructure is improved and the internal stress and defects are controlled effectively after heat treatment. On the contrary, the adverse stress would appear in the composite because of the difference of thermal expansion coefficient between carbon fiber and matrix alloy in the process of heat treatment, so the mechanical properties of the composite is decreased by 16%.