Tensile behavior of SiC_p/2124Al composites with various SiC particle sizes at room temperature

The tensile properties of 2124Al alloy composites reinforced with various sizes of SiC particles were investigated at room temperature. The size of SiC p was changed from 0.2 μm to 48.0 μm with an identical volume fraction of 20%. The results show that the relative density of the composite decreased with increase of the SiC p size from 3.0 μm to 48.0 μm, whereas 0.2 μm SiC p reinforced composite has the lowest relative density. The pore density, interparticle spacing, SiC particle cracking, SiC p/Al interfacial debonding, the distribution of SiC particles, in the composites are considered as factors to determine the failure behavior of the composites. [