Formation of ultrafine grains and twins in the β-phase during superplastic deformation of two-phase brasses
Formation of ultrafine grains and twins in the β-phase during superplastic deformation of two-phase brasses
During superplastic deformation of microduplex-structured brasses, the strain is primarily localized in the β-phase where deformation occurs by grain boundary sliding (GBS) and dislocation slip/creep mechanisms. Dynamic recrystallization and twinning were observed in the b.c.c. β-phase leading to a transformation of the initial coarse β-phase grains with average sizes of ~4-5 µm to ultrafine grains with sizes below 1 µm. Alloying with Al refined the β-grains, improved the superplastic behavior and reduced the occurrence of residual cavitation.
brass; deformation mechanisms; grain boundary sliding; superplasticity; twinning, Superplasticity, Brass, Grain boundary sliding, Twinning, Dynamic recrystallization
Mikhaylovskaya, Anastasia
c83b7a58-e12e-45ed-8bab-757760d3e294
Yakovtseva, Olga
96bc1e3c-e884-4d86-9a32-95b65d8f8aa7
Tabachkova, Natalia
9fbde4d4-49bf-4f0e-ad9e-aca9ca948580
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
September 2022
Mikhaylovskaya, Anastasia
c83b7a58-e12e-45ed-8bab-757760d3e294
Yakovtseva, Olga
96bc1e3c-e884-4d86-9a32-95b65d8f8aa7
Tabachkova, Natalia
9fbde4d4-49bf-4f0e-ad9e-aca9ca948580
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Mikhaylovskaya, Anastasia, Yakovtseva, Olga, Tabachkova, Natalia and Langdon, Terence G.
(2022)
Formation of ultrafine grains and twins in the β-phase during superplastic deformation of two-phase brasses.
Scripta Materialia, 218, [114804].
(doi:10.1016/j.scriptamat.2022.114804).
Abstract
During superplastic deformation of microduplex-structured brasses, the strain is primarily localized in the β-phase where deformation occurs by grain boundary sliding (GBS) and dislocation slip/creep mechanisms. Dynamic recrystallization and twinning were observed in the b.c.c. β-phase leading to a transformation of the initial coarse β-phase grains with average sizes of ~4-5 µm to ultrafine grains with sizes below 1 µm. Alloying with Al refined the β-grains, improved the superplastic behavior and reduced the occurrence of residual cavitation.
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Anastasia Mikhaylovskaya_manuscript-TGL
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Anastasia Mikhaylovskaya_Figures -TGL
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More information
Accepted/In Press date: 8 May 2022
e-pub ahead of print date: 19 May 2022
Published date: September 2022
Additional Information:
Funding Information:
One of the authors was supported by the European Research Council under ERC Grant Agreement No. 267464 -SPDMETALS (TGL). Several authors were supported by Ministry of Science and Higher Education of RF in a framework of State Task to Universities Project No. 0718-2020-0030 (MAV and OAY). TEM was studied in a Collective Using Center of NUST MISIS “Material Science and Metallurgy” supported by Ministry of Science and Higher Education of RF Project No. 075-15-2021-696 (NYuT).
Publisher Copyright:
© 2022 Acta Materialia Inc.
Keywords:
brass; deformation mechanisms; grain boundary sliding; superplasticity; twinning, Superplasticity, Brass, Grain boundary sliding, Twinning, Dynamic recrystallization
Identifiers
Local EPrints ID: 469715
URI: http://eprints.soton.ac.uk/id/eprint/469715
ISSN: 1359-6462
PURE UUID: 321f4a68-5bbc-482f-9d25-c5e30973a33a
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Date deposited: 22 Sep 2022 16:51
Last modified: 17 Mar 2024 02:55
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Contributors
Author:
Anastasia Mikhaylovskaya
Author:
Olga Yakovtseva
Author:
Natalia Tabachkova
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