Superplasticity in severely deformed high-entropy alloys
Superplasticity in severely deformed high-entropy alloys
High-entropy alloys (HEAs) are a new class of material producing superior properties that have a potential for replacing many structural materials in industry. Single-phase solid solution HEAs with face-centered cubic crystal structure show significant ductility and toughness over a wide temperature range including at cryogenic temperatures. Nevertheless, the occurrence of decomposition at elevated temperatures is challenging for many applications. These materials reveal sluggish diffusion and therefore high thermal stability so that processing by severe plastic deformation gives increased kinetics of decomposition and leads to fine-multiphase microstructures which provide a potential for achieving superior superplastic elongations. The present review is designed to examine the available superplastic data for HEAs and thereby to compare the behavior of HEAs with conventional superplastic alloys.
high-entropy alloys, microstructure engineering, severe plastic deformation, superplasticity, ultrafine-grained materials
1526-1536
Shahmir, Hamed
6914819d-f654-4928-a445-9ac0d3abedcf
Mehranpour, Mohammad Sajad
8dff7637-4070-4234-86c5-2327bbc38514
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
1 July 2023
Shahmir, Hamed
6914819d-f654-4928-a445-9ac0d3abedcf
Mehranpour, Mohammad Sajad
8dff7637-4070-4234-86c5-2327bbc38514
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Shahmir, Hamed, Mehranpour, Mohammad Sajad, Kawasaki, Megumi and Langdon, Terence G.
(2023)
Superplasticity in severely deformed high-entropy alloys.
Materials Transactions, 64 (7), .
(doi:10.2320/matertrans.MT-MF2022008).
Abstract
High-entropy alloys (HEAs) are a new class of material producing superior properties that have a potential for replacing many structural materials in industry. Single-phase solid solution HEAs with face-centered cubic crystal structure show significant ductility and toughness over a wide temperature range including at cryogenic temperatures. Nevertheless, the occurrence of decomposition at elevated temperatures is challenging for many applications. These materials reveal sluggish diffusion and therefore high thermal stability so that processing by severe plastic deformation gives increased kinetics of decomposition and leads to fine-multiphase microstructures which provide a potential for achieving superior superplastic elongations. The present review is designed to examine the available superplastic data for HEAs and thereby to compare the behavior of HEAs with conventional superplastic alloys.
Text
Shahmir-2023-MT-final
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More information
Accepted/In Press date: 23 March 2023
e-pub ahead of print date: 14 April 2023
Published date: 1 July 2023
Additional Information:
Funding Information:
This study was supported in part by the National Science Foundation of the United States under Grant No. CMMI-2051205 (MK) and by the European Research Council under ERC Grant Agreement No. 267464-SPDMETALS (TGL).
Publisher Copyright:
©2023 The Japan Institute of Metals and Materials.
Keywords:
high-entropy alloys, microstructure engineering, severe plastic deformation, superplasticity, ultrafine-grained materials
Identifiers
Local EPrints ID: 483903
URI: http://eprints.soton.ac.uk/id/eprint/483903
ISSN: 1347-5320
PURE UUID: bde38b60-8977-4ff0-ac5e-ee9b3407044e
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Date deposited: 07 Nov 2023 18:11
Last modified: 06 Jun 2024 01:40
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Contributors
Author:
Hamed Shahmir
Author:
Mohammad Sajad Mehranpour
Author:
Megumi Kawasaki
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