SiCp/Al-Fe-V-Si composites were prepared by spray deposition

and then were wedge pressed.The effects of wedge pressing on pores

density

SiC-Al interface and mechanical properties of the composites prepared were investigated.The results reveal that microstructure and properties of the composites prepared can be improved effectively by increasing the cumulative reduction of the wedge pressing.The pressed blank is characterized with weak metallurgical bonding

low ultimate strength and elongation because of microcracks among deposited particles and between SiC particles and the Al-matrix when the cumulative reduction is lower than 45%.With cumulative reduction more than 45%

the micro-crack among the deposited particles as well as between Al matrix and SiC particles is bridged

so interface bonding is improved.Meanwhile

there is absence of evident Al

4

C

3

brittle phase generating.There is no significant change in microstructure of the composite when the cumulative reduction is more increase

while the SiC particles are distributed more uniformly.The ultimate strength and elongation of the composites reach 291 MPa and 2.4%

respectively

when the cumulative reduction is 50%.