Microstructure and properties of Mg–8Li–1Al–1Ce alloy

Abstract: Mg–8Li–1Al–1Ce alloy was prepared. And the microstructure of as-cast and extruded specimens was analyzed with OM, SEM and EDX. Results showed that as-cast specimens are composed of α phase (Mg), β phase (Li) and rod-like Al2Ce compound. In the extruded specimens, the microstructure is refined and the β phase has the effect of coordination during deformation. After extruding process, the long rod-like Al2Ce compound becomes short rods distributing evenly in the extruding direction. Mechanical properties results showed that the strength and elongation are both improved after extruding deformation. [Copyright &y& Elsevier]