Cryo-severe plastic deformation, microstructures and properties of metallic nanomaterials at low temperatures
Cryo-severe plastic deformation, microstructures and properties of metallic nanomaterials at low temperatures
Based on the experimental results obtained mainly by the authors, the effect of decreasing the temperature to 77 K using various methods of cryogenic severe plastic deformation (cryo-SPD), such as equal-channel angular pressing, high-pressure torsion, as well as large deformations in the form of cryorolling, on the mechanical properties and mechanisms of plastic deformation is investigated. The results are presented for deformation of a number of metals (titanium, zirconium, cobalt), Ni-18.75%Fe alloy and high-entropy alloys (HEA) Al0.5CoCrCuFeNi, CrMnFeCoNi2Cu, CoCrFeNiMn over a wide range of low temperatures. The efficiency of using cryo-SPD methods to increase their strength is demonstrated. The reasons for the paradoxical effect of cryo-SPD on the mechanical characteristics of some HEAs, which contradict the thermally-activated nature of plastic deformation, are analyzed. It is shown that the use of the thermal activation analysis method makes it possible to establish the most probable physical mechanisms that determine the plasticity of a wide class of materials in the coarse-grained and nanostructured states. The features of plastic deformation of various metals and alloys in the coarse-grained and nanostructured states in the ultralow temperature range (4.2-0.5 K) are described.
cryo-rolling, cryo-severe plastic deformation, ductility, high-entropy alloys, metallic alloys, strength, thermally-activated deformation, ultralow temperature
1806-1819
Tabachnikova, Elena
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Hryhorova, Tetiana
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Shumilin, Sergii
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Semerenko, Yuriy
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Huang, Yi
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Langdon, Terence G.
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1 August 2023
Tabachnikova, Elena
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Hryhorova, Tetiana
8ab4e1c9-a7d3-4587-8879-5e9f43368104
Shumilin, Sergii
0b83e0e6-9a04-44ef-864e-1744c87513ce
Semerenko, Yuriy
6162713c-6e6d-464b-8de1-3475d52fb9ef
Huang, Yi
aab0afeb-52ad-49d5-a5b7-fbc3f23286dc
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Tabachnikova, Elena, Hryhorova, Tetiana, Shumilin, Sergii, Semerenko, Yuriy, Huang, Yi and Langdon, Terence G.
(2023)
Cryo-severe plastic deformation, microstructures and properties of metallic nanomaterials at low temperatures.
Materials Transactions, 64 (8), .
(doi:10.2320/matertrans.MT-MF2022037).
Abstract
Based on the experimental results obtained mainly by the authors, the effect of decreasing the temperature to 77 K using various methods of cryogenic severe plastic deformation (cryo-SPD), such as equal-channel angular pressing, high-pressure torsion, as well as large deformations in the form of cryorolling, on the mechanical properties and mechanisms of plastic deformation is investigated. The results are presented for deformation of a number of metals (titanium, zirconium, cobalt), Ni-18.75%Fe alloy and high-entropy alloys (HEA) Al0.5CoCrCuFeNi, CrMnFeCoNi2Cu, CoCrFeNiMn over a wide range of low temperatures. The efficiency of using cryo-SPD methods to increase their strength is demonstrated. The reasons for the paradoxical effect of cryo-SPD on the mechanical characteristics of some HEAs, which contradict the thermally-activated nature of plastic deformation, are analyzed. It is shown that the use of the thermal activation analysis method makes it possible to establish the most probable physical mechanisms that determine the plasticity of a wide class of materials in the coarse-grained and nanostructured states. The features of plastic deformation of various metals and alloys in the coarse-grained and nanostructured states in the ultralow temperature range (4.2-0.5 K) are described.
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Elena_Final text CryoSPD
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Accepted/In Press date: 30 March 2023
e-pub ahead of print date: 25 July 2023
Published date: 1 August 2023
Additional Information:
Funding Information:
The authors gratefully acknowledge helpful discussions with Dr Michail Tikhonovsky, Dr Serhii Smirnov and Dr Aleksey Podolskiy. Two authors (YH and TGL) were supported by the European Research Council under ERC Grant Agreement No. 267464-SPDMETALS.
Publisher Copyright:
© 2023 The Japan Institute of Metals and Materials.
Keywords:
cryo-rolling, cryo-severe plastic deformation, ductility, high-entropy alloys, metallic alloys, strength, thermally-activated deformation, ultralow temperature
Identifiers
Local EPrints ID: 484641
URI: http://eprints.soton.ac.uk/id/eprint/484641
ISSN: 1347-5320
PURE UUID: 7e0cbf5d-35ad-4588-9ef3-2f3d3df26f51
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Date deposited: 17 Nov 2023 18:19
Last modified: 17 Mar 2024 02:55
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Contributors
Author:
Elena Tabachnikova
Author:
Tetiana Hryhorova
Author:
Sergii Shumilin
Author:
Yuriy Semerenko
Author:
Yi Huang
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