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, No. 37, 30-38. https://doi.org/10.26565/2222-5617-2022-37-03.