Influence of Cd and Sn on the Kinetics of the GP Zones Formation in Al-Zn-Mg

摘要

The influence of Cd and Sn on the GP zones formation has been studied for the solid solutions Al-Zn7 percent-Mg3 percent-Cd0.05 perent(wt) and Al-Zn7 percent-Mg3 percent-Sn0.05 percent (wt) From the hardness isotherms, the volumic fraction of the formed GP zones is determined for different times of ageing, at 80 deg C. The presence of Cd result in a retarding effect on the GP zones formation, and that of Sn to their suppression