Hybrid Non-equilibrium Composites Produced via Friction Stir Processing

Friction stir processing (FSP) is increasingly used to improve the surface properties of ductile metals and alloys. It is possible to add reinforcing particles in the FSP zone to obtain hybrid non-equilibrium composites with desired properties. In the present work, hybrid non-equilibrium composites of aluminium alloy A 6061 with added reinforcing particles of Zn or Ti obtained by FSP are presented. Processing is carried out with a 4X5MFS steel tool with a special geometry, which performs rotary and progressive movement. The study was carried out under fixed parameters of the processing mode. Results were obtained on the influence of the concentration of reinforcing particles on the hardness and mechanical characteristics of the hybrid non-equilibrium composites.