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. (2022). Journal of V. N. Karazin Kharkiv National University. Series Physics, 37, 30-38. https://doi.org/10.26565/2222-5617-2022-37-03