INFLUENCE OF TEMPERATURE OF ACCUMULATIVE ROLL BONDING ON THE MECHANICAL PROPERTIES OF AA5083–1% Al₂O₃ COMPOSITE

Abstract

The influence of rolling temperature on the microstructure and mechanical properties of AA5083–1% Al₂O₃ composites has been analyzed in this study. The alloy was deformed with the method of warm accumulative roll bonding in various temperature conditions, i.e., at ambient temperature, 200 °С, and 300 °С up to 5 cycles (ε = 4). The structure has been studied with scanning electron microscopy (SEM), and mechanical properties of the deformed material have been measured by tensile test as well as Vickers microhardness test. It was established that the rolling temperature had a significant effect on the mechanical properties and microstructure of the manufactured MMCs. High strength, low elongation, and high average Vickers microhardness were obtained for the material processed at lower temperatures, i.e., at ambient temperature. Whereas, by increasing the rolling temperature to 300 °С, the toughness and elongation ranges were greater than for the MMCs manufactured at lower temperatures.