Abstract
The age-hardenable Al-Mg-Si alloys are widely used for various products such as architectural materials and outer body panels of automobiles. Recently, severe plastic deformation (SPD) gets attention because its superior effect in improving strength to the conventional age-hardening. Examples of SPD are high-pressure torsion (HPT), accumulative roll bonding (ARB), etc. Also, previous studies have reported that the addition of Cu improves the strength of cold-rolled Al-Mg-Si alloys. However, the effects of alloying elements on mechanical properties have not been fully investigated. In this study, Al-0.6%Mg-1%Si alloys were solution treated at 540℃ for 1 h, water-quenched and cold-rolled by 90%. Tensile test was made in laboratory air to evaluate the effect of copper and iron on mechanical properties.
