Plastic deformation is plays an important role to change the microstructural and mechanical properties such as tensile Strength, hardness, toughness in the application of material in engineering application. In this paper friction stir processing (FSP) is proposed which is an advanced thermo-mechanical processing technique that uses localized plastic deformation to change the material's properties. A7075-T6 aluminum alloy was friction stir processed under different combination of process parameters such as rotational and translational speeds. The effect of these parameters on the microstructure and mechanical properties especially ultimate tensile strength (UTS) and hardness were identified and discuss. The results shows that the Rotational and translational speed is the dominant feature towards processing forces and surface morphology and has a significant effect on the control and optimization of the process.