Effect of the strain-induced melt activation (SIMA) process on the tensile properties of a new developed super high strength aluminum alloy modified by Al5Ti1B grain refiner

► The effect of Al5Ti1B on the aluminum alloy produced by SIMA process was studied. ► Al5Ti1B is an effective in reducing the grain and reagent fine microstructure. ► Reheating condition to obtain a fine globular microstructure was optimized. ► The optimum temperature and time in SIMA process are 575 °C and 20 min respectively. ► UTS of globular structure specimens have a more value than Ti-refined specimens.