3Dwoven carbon fiber reinforced aluminum composites（3D-Cf/Al composites）have the advantages of impact resistance、non-hierarchical

anti-cracking

fatigue resistance

high integrity.However

carbon fiber and aluminum alloy matrix exhibits poor wettability

so the interfacial reaction is difficult to control in pressure infiltration.On the basis of experiment of unidirectionally aligned Cf/Al composites prepared by the vacuum pressure infiltration

the preparation of 3D-Cf/Al composites by vacuum pressure infiltration process was carried out

and processing parameters were presented.The results reveal that 3D-Cf/Al composites prepared realize a complete infiltration

and the density and tensile strength of3D-Cf/Al composites reach up to 95.88% and 782.33 MPa

respectively

with the preheating temperature of 500

5

50 ℃

infiltration temperature of 730 ℃

infiltration pressure of 8 MPa for 20 min.