ELECTRICAL, MAGNETIC, AND MECHANICAL PROPERTIES OF AL 7075-T6/AL2O3-T6 COMPOSITES PROCESSED BY STIR CASTING ROUTE

Because of their combination, there is a growing market for aluminum matrix composites, which are lightweight, with good mechanical, electrical, magnetic, fatigue, and tribological properties. This study investigates the fabrication, characterization, electrical, magnetic, and mechanical properties of composites made from AA7075-T6 and Al2O3 prepared by stir casting techniques. Three nanocomposite materials can be durable and strong and are used in engineering applications, structures of aircraft, industrial equipment, cars, etc. These composites were fabricated for three stirring times, i.e., 1%, 3%, and 5wt% Al2O3 with 2, 4-and 6-minute stirring times. It is found that increasing the amount of Al2O3 increases both mechanical and electrical resistivity while electrical conductivity reduces for the three stirring times used. The electrical, magnetic, and mechanical characteristics of nanoparticles were assessed. The experimental results revealed that the composite, including 5wt% Al2O3, exhibited better electrical, magnetic, and mechanical properties. The maximum improvement for these properties was found at 4 min stirring time for the best composite 5wt% Al2O3. The optical microstructure revealed that good distribution of Al2O3 into the matrix had 5wt% at 4 min. stirring time compared to the base metal.