A comparative study of replicated pure Al and AC3A composite foams

Pure Al and AC3A Al alloy, mixed with SiC particles, have been used to produce open-cell composite foams through replication process of polyurethane foam preform, assisted with infiltration pressure. The addition of SiC particles is between 1 – 5 wt.%. A comparative examination of cellular microstructure and compressive strength of both foams is undertaken. It is demonstrated that although both have similar foam structure and particle content, but the disparities in matrix microstructure and properties result in distinct mechanical properties.