Studying recovery processes in a strain-hardened Al–Mg–Mn–Fe–Si alloy
- Autores: Pugacheva N.1, Vichuzhanin D.1, Kalashnikov S.2, Ivanov A.2, Smirnov S.1, Frolova N.3
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Afiliações:
- Institute of Engineering Science, Ural Branch
- Makeyev State Rocket Center
- Mikheev Institute of Metal Physics, Ural Branch
- Edição: Volume 117, Nº 9 (2016)
- Páginas: 920-926
- Seção: Structure, Phase Transformations, and Diffusion
- URL: https://journals.rcsi.science/0031-918X/article/view/166308
- DOI: https://doi.org/10.1134/S0031918X16090076
- ID: 166308
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Resumo
The material of a shell structure subjected to 20-year use under ambient conditions has been studied. The structure and mechanical characteristics of a strain-hardened AMg6 alloy, as well as the effect of subsequent holdings of this alloy for 10–3000 h at temperatures of 50, 70, 80, 100, 130, 150, 180, and 220°C, on changes in its dislocation structure and mechanical characteristics have been investigated. It has been shown that, in the structures under study, the AMg6 alloy has a cellular structure with a high density of dislocations and the ultimate strength σu = 445.5 ± 2.5 MPa, the proof stress σ0.2 = 326.5 ± 3.5 MPa, and the relative elongation δ = 11.7 ± 0.5%. Polygonization in the alloy occurs at a temperature of 220°C and the initial stage of the recovery process corresponds to a temperature range of 50–100°С in which the softening process can be divided into two stages, i.e., stage (1) of active softening due to the interaction of point defects with each other and stage (2) of the stabilization of the characteristics of the alloy.
Sobre autores
N. Pugacheva
Institute of Engineering Science, Ural Branch
Autor responsável pela correspondência
Email: nat@imach.uran.ru
Rússia, ul. Komsomol’skaya 34, Ekaterinburg, 620049
D. Vichuzhanin
Institute of Engineering Science, Ural Branch
Email: nat@imach.uran.ru
Rússia, ul. Komsomol’skaya 34, Ekaterinburg, 620049
S. Kalashnikov
Makeyev State Rocket Center
Email: nat@imach.uran.ru
Rússia, Turgoyakskoe sh. 1, Miass, Chelyabinskaya oblast, 456300
A. Ivanov
Makeyev State Rocket Center
Email: nat@imach.uran.ru
Rússia, Turgoyakskoe sh. 1, Miass, Chelyabinskaya oblast, 456300
S. Smirnov
Institute of Engineering Science, Ural Branch
Email: nat@imach.uran.ru
Rússia, ul. Komsomol’skaya 34, Ekaterinburg, 620049
N. Frolova
Mikheev Institute of Metal Physics, Ural Branch
Email: nat@imach.uran.ru
Rússia, ul. S. Kovalevskoi 18, Ekaterinburg, 620990