Study on Alloying Technology of 702A Aluminum Alloy

In order to improve strength and toughness of 702A aluminum alloy,through orthogonal experiment and control of melting process,the determined alloy composition is(wt%) 7Si,0.5Mg,0.1Mn,1.5Cu.After the solution heat treatment and aging treatment,the mechanical properties of 702A aluminum alloy achieve σ≥350MPa,δ≥5%.