The continuous SiC

f

/Al composites with 40%fibre volume fraction were prepared by using SiC fibre unidirectional preform as reinforcement material

ZL301 alloy as matrix material

and fibre preheating temperature at 500℃

530℃and 550℃.The phase composition

fiber damage and mechanical properties of continuous SiCf/Al composites with different fiber preheating temperatures were analyzed.The results reveal that with the increase of preheating temperature

the damage of fibers becomes more serious.The tensile strength of fibers preheated at 500℃reaches 1 827 MPa

which is 77.7%of the strength of fiber precursors.While that of fibers preheated at 550℃reach only 1 360 MPa.The fiber preheating temperature has a great influence on the mechanical properties of continuous SiC

f

/Al composites.The tensile strength of the composites is the highest when the fibers are preheated at 530℃

reaching 483 MPa

and fracture surface of the composites is characterized by tough crack and moderate interfacial bonding strength.