Effect of rolling on mechanical properties and fatigue behavior of an Al-Mg-Sc-Zr alloy

Abstract

An aluminum alloy with a chemical composition of Al-6%Mg-0.35%Mn-0.2%Sc-0.08%Zr-0.07%Cr (in wt.) was rolled up to different reductions of 75, 88 and 95% at 360°C and at ambient temperature. The static mechanical properties and the high-cyclic fatigue (HCF) life were examined. It was shown that the hot rolling results in increased yield stress (YS) and ultimate tensile strength (UTS). However, ductility and fatigue limit of the hot rolled alloy and initial as-cast ingot are nearly the same