Abstract
Review of the possibility of replacing thin sheets (0.5 mm) of alloy 2024 with sheets of a new alloy of the Al – Mg – Sc system alloyed with transition metals. New material is lighter than 2024 but save high-level properties such as corrosion strait, satisfactory weldability, static strength, ductility and crack resistance. Review of the possibility that in the case of using extrusion technologies through the matrix with a periodically changing profile. The coefficient of accumulated deformation is increased by almost 2 times compared with extrusion through a cone matrix. This allows to improve the developed structures with the same drawing coefficients equal to 4. It was shown that mixed structure with small-angle dislocation subgrain boundaries and strongly misoriented boundaries of fragmented structures forms in sheets with a thickness of 0.5 mm.
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