The Production of Al/Al2O3Composite Strips Using a New Method

In this work, particle reinforced aluminum composite strips with 2 and 4 wt% of Al2O3 were obtained from powder mixture using powder metallurgy (P/M), mechanical alloying (MA), and vacuum hot pressing (VHP) were followed by hot rolling process. The microstructural evolution and mechanical properties of Al/Al2O3 composite strips were evaluated. Optical microscopic investigations of hot rolled aluminum matrix composite (AMC) were done to study the redistribution of alumina particles in the matrix and also the morphology of Al2O3 particles after 90% thickness reduction. The effect of alumina content in the matrix on hardness, tensile strength, and elongation was examined. Scanning electron microscope (SEM) was used for evaluation of fracture surfaces after tensile test and also aluminum-alumina interface.

کلیدواژه ها:

Powder metallurgy ، Mechanical alloying ، Vacuum hot pressing ، Hot rolling ، Mechanical properties