EFFECT OF HIGH PRESSURE TORSION ON STRUCTURE AND MECHANICAL PROPERTIES OF Al–Ca–Cu ALLOY
- Autores: Rogachev S.1,2, Naumova E.1, Tabachkova N.1, Ten D.1, Sundeev R.1, Zadorozhny M.3
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Afiliações:
- MISiS National University of Science and Technology
- Institute of Metallurgy and Materials Science. A.A. Baikov, Russian Academy of Sciences
- Moscow Polytechnic University
- Edição: Volume 124, Nº 6 (2023)
- Páginas: 550-556
- Seção: ПРОЧНОСТЬ И ПЛАСТИЧНОСТЬ
- URL: https://journals.rcsi.science/0015-3230/article/view/139471
- DOI: https://doi.org/10.31857/S0015323023600314
- EDN: https://elibrary.ru/WVMRHO
- ID: 139471
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Resumo
To improve the balance of strength and ductility of the Al–6% Ca–8% Cu (wt %) alloy, the high-pressure torsion (HPT) deformation followed by annealing was applied. The structure of the as-cast alloy consisted mainly of two eutectics [(Al) + AlCaCu] and [(Al) + (Al, Cu)4Ca + AlCaCu]. HPT through three turns leads to the formation of a predominantly submicrocrystalline structure, refinement of eutectic particles and their more uniform distribution in the sample volume, calcium segregation from AlCuCa and (Al, Cu)4Ca particles, and supersaturation of the (Al) solid solution with copper. Such a structure provides a strengthening of the alloy by a factor of 3.5, but contributes to its embrittlement. Subsequent annealing at 400°C achieves a good balance of strength and ductility of the alloy.
Sobre autores
S. Rogachev
MISiS National University of Science and Technology; Institute of Metallurgy and Materials Science. A.A. Baikov, Russian Academy of Sciences
Email: csaap@mail.ru
Moscow, 119049 Russia; Moscow, 119334 Russia
E. Naumova
MISiS National University of Science and Technology
Email: csaap@mail.ru
Moscow, 119049 Russia
N. Tabachkova
MISiS National University of Science and Technology
Email: csaap@mail.ru
Moscow, 119049 Russia
D. Ten
MISiS National University of Science and Technology
Email: csaap@mail.ru
Moscow, 119049 Russia
R. Sundeev
MISiS National University of Science and Technology
Email: csaap@mail.ru
Moscow, 119049 Russia
M. Zadorozhny
Moscow Polytechnic University
Autor responsável pela correspondência
Email: csaap@mail.ru
Moscow, 107023 Russia
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