Investigation on Micro-Hardness, Surface Roughness and SEM of Nano TiO2/B4C/Graphene Reinforced AA 7075 Composites Fabricated by Frictional Stir Processing

The current work seeks to discover and choose the proper friction stir processing (FSP) settings for aluminum alloy 7075 surface composites enhanced by adding three unique nanoparticles of titanium dioxide (TiO2), B4C, graphene superior performance. FSP is only method that produces higher amounts particle distribution nanoscale reinforcing. For sample fabrication, a special relatively high rotational speed 2000 rpm feed rate 45 mm/min were tested with suitable range parameters (800–2000 rpm, 25–45 mm/min). To measure micro-hardness roughness different nano composites, they studied under various conditions. findings showed produced at speeds 1400 decreased granule distributions 39% 73%, respectively, increased 54%. According microstructure investigations, good bonding was between AA7075 substrate generated 1200 base metal processed specimens 800 rpm. AA7075/B4C composite rotating had than other two composites.