Preparation of a high strength Al-Cu-Mg alloy by mechanical alloying and press-forming

► A high strength aluminum alloy of Al-2 wt.%Mg-2 wt.%Cu has been prepared by mechanical alloying and press-forming. ► The alloy only consists of solid solution α-Al. ► The grains size of α-Al was about 300 nm-5 μm. ► The solid solution strengthening and the grain refinement strengthening are the main reasons for such a high strength.