Research on Influence of Ag Element on Precipitation Behavior of Al-Mg-Si Alloy

Al-Mg-Si alloys are widely used in aerospace, automotive and construction industries. It is a heat-treated alloy,and it is very important to study its aging behavior. The effects of Ag elements on aging behavior of Al-Mg-Si alloys were summarized, and the role of Ag elements was reviewed. The effects of Ag elements on the aging hardness curve, Ag elements on the DSC curve and the configuration of precipitated phase（quantity, size, lattice constant, etc.） were included. At the same time, the problems that need to be paid attention to in the future research and the future research direction were pointed out.