• Ultrasonic melt processing + Al-Ti-B have the best grain refinement effect. • The size of Fe-rich phase in ultrasonic + Al-Ti-B is smaller than conventional methods. • Ultrasonic + Al-Ti-B improve the nucleation temperature of α-Al and Fe-rich phases. • The solidification reactions under different conditions are estabilished.
9 March 2023 in Journal of Materials Research and Technology