High strain rate superplasticity in a commercial Al-Mg-Sc alloy

Abstract It was shown that an Al–5.7%Mg–0.32%Sc–0.3%Mn alloy subjected to severe plastic deformation through equal-channel angular extrusion exhibits superior superplastic properties in the temperature range of 250–500 °C at strain rates ranging from 1.4 × 10 −5 to 1.4 s −1 with a maximum elongation-to-failure of 2000% recorded at 450 °C and an initial strain rate of 5.6 × 10 −2 s −1 .