Production of High Strength Al-Al2O3 Composite by Accumulative Roll Bonding

Recently accumulative roll bonding (ARB) has been used as a novel method to produce particle reinforced metal matrix composites. Due to combination of ARB processing and particle effect on microstructure, these composites have excellent mechanical properties. In this study, Al-Al2O3 composite was successfully produced and the effects of number of ARB cycles and the amount of alumina content on the microstructure and mechanical properties of the composites were investigated. According to results of the tensile tests, it is shown that the yield and tensile strength of the composite is increased with the number ofARB cycles. Scanning electron microscopy (SEM) reveals that distribution of the alumina particles is improved by increasing the ARB cycles. It is also found that the tensile strength of the composite as a function of alumina content has a maximum value by 2.5 wt.%, which is 5.1 times higher than the annealed aluminum.

کلیدواژه ها:

Al-Al2O3 composite ، Accumulative Roll Bonding ، Mechanical properties