Technological Aspects of Thin Plate Production for Aircraft Construction Based on Al–Mg–Sc Alloys

The possibility of replacing thin plates (0.5 mm) of AA2024 grade alloy by plates made of a novel alloy of the Al–Mg–Sc system doped with transition metals is studied. The novel material is lighter than AA2024 alloy while retaining such properties as a high level of corrosion resistance and satisfac...

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Bibliographic Details
Published in:Inorganic materials : applied research 2021-03, Vol.12 (2), p.288-295
Main Authors: Eremeev, N. V., Predko, P. Yu, Eremeev, V. V., Bespalov, A. V., Bochvar, S. G.
Format: Article
Language:English
Subjects:
Alloys
Aluminum base alloys
Chemistry
Chemistry and Materials Science
Corrosion resistance
Crack propagation
Elongated structure
Extrusion
Grain sub boundaries
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Magnesium base alloys
Materials of Aircraft and Aerospace Engineering
Materials Science
Scandium
Ternary systems
Thin plates
Transition metals
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Summary:The possibility of replacing thin plates (0.5 mm) of AA2024 grade alloy by plates made of a novel alloy of the Al–Mg–Sc system doped with transition metals is studied. The novel material is lighter than AA2024 alloy while retaining such properties as a high level of corrosion resistance and satisfactory weldability, equaling the aforementioned alloy in static strength, ductility, and crack resistance. It is shown that, upon using extrusion through the matrix with a periodically changing profile, the accumulated strain factor exhibits an almost twofold increase in comparison with the extrusion through a cone matrix. This makes it possible to improve the refinement of the structure at the same elongation ratio amounting to 4. It has been shown that a mixed structure with small-angle dislocation subgrain boundaries and strongly disoriented boundaries of fragmented structures is formed within the plates with a thickness of 0.5 mm.
ISSN:2075-1133
2075-115X
DOI:10.1134/S2075113321020131