Effect of Additional Doping with Scandium and Scandium with Zirconium on Strength Properties of the Alloys of Al-Mg2Si System

摘要

The effect of Sc and Sc + Zr on the structure and properties of Al-Mg-Si alloys is studied using the methods of hardness measurement, resistivity, mechanical properties, and light and electron microscopy. A considerable strengthening of Al-Mg2Si alloys doped with transition metals ( Sc or Sc + Zr) during natural aging and its almost complete absence during artificial aging are established. The observed effects are explained using electron microscopy and local X-ray analysis.