The technology of preparing Al/Al2O3 metal matrix composites with direct oxidation in Al melt is described. Oxygen was blown into the Al melt . The Al melt was oxidized swiftly to produce Al2O3. Then, a composite of aluminum matrix with disperse Al2O3 particles was obtained. The microstructure and mechanical property of the composite were observed. The results indicate that the distribution of Al2O3 particles in the composites is uniform. The Al/Al2O3 metal matrix composites can be easily prepared by adjust...