High-temperature deformation and enhanced ductility of friction stir processed-7010 Aluminum Alloy

► Study the effect of FSP on microstructure, ductility changes and the mechanical behavior of AA 7010. ► Elucidate the deformation mechanism of FSP 7010 in the temperature range 703-753 K. ► Compared to the unprocessed AA 7010, FSP is an effective means for ductility enhancement. ► The true Qa is independent to strain rate and equals 120 kJ/mol; close to that for diffusion of Mg in Al. ► The threshold stress is function of temperature where it decreases with increasing temperature.