Effect of copper and silicon content on mechanical properties in Al–Cu–Si–Mg alloys

In this study, effect of copper and silicon content on the mechanical properties of Al–Cu–Si–Mg alloys has been investigated. Al–Cu–Si–Mg alloys with 1, 3, 4.5, 6% Cu and 0, 5, 7, 12, 18% Si were utilized for this purpose. After melting and Na modification, alloys were cast in metal molds at 780 °C and solidified. They were solution treated at 490 °C for 4 h and then quenched. Samples were aged at 180 °C for 5, 10, 15, 20 h to observe the effect of aging on mechanical properties.