Evolution of the structure and mechanical properties of sheets of the Al–4.7Mg–0.32Mn–0.21Sc–0.09Zr alloy due to deformation accumulated upon rolling
- Authors: Zolotorevskiy V.S.1, Dobrojinskaja R.I.2, Cheverikin V.V.1, Khamnagdaeva E.A.2, Pozdniakov A.V.1, Levchenko V.S.1, Besogonova E.S.1
-
Affiliations:
- National University of Science and Technology “MISiS”
- OAO “Kompozit”
- Issue: Vol 117, No 11 (2016)
- Pages: 1163-1169
- Section: Strength and Plasticity
- URL: https://journals.rcsi.science/0031-918X/article/view/166445
- DOI: https://doi.org/10.1134/S0031918X16110156
- ID: 166445
Cite item
Abstract
The mechanical properties and microstructure of sheets of an Al–4.7Mg–0.32Mn–0.21Sc–0.09Zr alloy deformed and annealed after rolling have been investigated. The total accumulated true strain was εf = 3.33–5.63, and the true strain at room temperature and at 200 °C was εс = 0.25–2.3. The strength properties of the sheets (yield stress σ0.2 = 495 MPa and ultimate tensile strength σu = 525 MPa) in the deformed state were greater than those after equal-channel angular pressing (ECAP) deformation. The mechanical properties of the deformed sheets after annealing depended on the size of subgrains inside the deformed grains bands with high-angle grain boundaries (HABs). With the increase in the annealing temperature from 150 to 300°С, the subgrain size increased from 80 to 300 nm. The relative elongation δ in the as-cast state and after annealing at 200–250°C (δ = 40–50%) was higher than that after annealing at 300–370°C (δ = 24–29%).
About the authors
V. S. Zolotorevskiy
National University of Science and Technology “MISiS”
Email: pozdniakov@misis.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049
R. I. Dobrojinskaja
OAO “Kompozit”
Email: pozdniakov@misis.ru
Russian Federation, Pionerskaya 4, Korolev, Moscow oblast, 141074
V. V. Cheverikin
National University of Science and Technology “MISiS”
Email: pozdniakov@misis.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049
E. A. Khamnagdaeva
OAO “Kompozit”
Email: pozdniakov@misis.ru
Russian Federation, Pionerskaya 4, Korolev, Moscow oblast, 141074
A. V. Pozdniakov
National University of Science and Technology “MISiS”
Author for correspondence.
Email: pozdniakov@misis.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049
V. S. Levchenko
National University of Science and Technology “MISiS”
Email: pozdniakov@misis.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049
E. S. Besogonova
National University of Science and Technology “MISiS”
Email: pozdniakov@misis.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049