Microsturcture and Mechanical Properties of SiCp/Al Composites Made by Spray Co-deposition

The SiCp/Al composites with 35 vol% SiCp have been made by spray co deposition.Pores and distribution of Sic particles in the composites as deposited has beenobserved with SEM.The stress strain curves of SiCp/Al composites from seveal processes have been obtained in tensile apparatus.The chamber is vacuumized,nitrogen is filled before atomization and as deposited composite is hotpressed then the morphology of the fracture surface has been investigated by SEM.The results show that the composite as-deposited has low porosity,small pore dimensions and uniform distribution of SiC particles,the yield strength,tensile strength and elogation are elevated,and the fracture mechanism of the SiCp/Al composites is pore aggragation.