Poyda, V.; Poyda, A.; Mila, D. The Influence of the Main Alloying Elements on the Formation of the Initial Grain Structure, on Phase Transformations and on Structural Changes That Occur During Superplastic Deformation of Alloys Al - 4.1 wt.% Mg - 0.5 wt.% Zr, 1420T, 1421, 1423. Physics 2022, 30-38.