The effect of cold rolling on the dynamic mechanical responses of SiCp/Al composites

Abstract

Abstract The effect of cold rolling reduction on the dynamic mechanical responses of a 14 vol.% 3.5 μm SiCp/2024 Al and an 18 vol.% 3.5 μm SiCp/2048 Al were measured with a dynamic mechanical analyzer. It was found that both the elastic modulus and the damping capacity were not sensitive to the amount of cold rolling for both composites. Whilst little change was observed in the 14 vol.% SiCp reinforced composite, in the 18 vol.% SiCp reinforced composite the elastic modulus decreased and the damping capacity increased slightly as the amount of cold rolling was increased. The results suggest that a small SiC particle size and a suitable volume fraction of SiCp, together with a good SiC–Al interfacial bonding can minimize the amount of SiC particle fracture and SiC–Al interfacial debonding upon cold rolling. Control of these defects is the major reason for the insensitivity of the elastic modulus and damping capacity upon cold rolling.