Processing-microstructure-mechanical properties of an Al-Cu/SiC metal matrix composite synthesized using disintegrated melt deposition technique

In the present study, an aluminum based metallic matrix (Al-2wt. % Cu) was reinforced with SiC particulates using a new disintegrated melt deposition technique. Microstructural characterization studies conducted on the samples taken from disintegrated melt deposition technique revealed a columnar-equiaxed matrix microstructure, finite amount of porosity and uniform distribution of SiC particulates. Results of ambient temperature mechanical tests demonstrate an increase in 0.2% Y.S and UTS and decrease in ductility of samples taken from disintegrated melt deposition technique when compared to the unreinforced samples. The results of microstructural characterization and mechanical testing were finally rationalized in terms of the processing steps involved in the disintegrated melt deposition technique.