Microstructure evolution during reheating of an extruded Mg¿Al¿Zn alloy into the semisolid state

Abstract The microstructure evolution of extruded Mg–Al–Zn alloys during reheating into the semisolid state is characterised by a very inhomogeneous solid–liquid distribution upon the early stages of remelting, a considerable amount of entrapped liquid and excellent sphericity of the solid particles. All these features are explained by metallurgical considerations.