The strengthening effect of icosahedral phase on as-extruded Mg–Li alloys

Through investigating the mechanical properties of three kinds of Mg–Li–Zn–Y alloys, a strengthening method, i.e. introducing I-phase (Mg3Zn6Y, icosahedral quasicrystal structure) in the matrix of Mg–Li alloys, for as-extruded Mg–Li alloys has been demonstrated. The tensile results indicate that I-phase can effectively strengthen the alloys. The substantial enhancement of strength has been explained by microstructure changes.