Influence of high-pressure torsion on the microstructure and the hardness of a Ti-rich high-entropy alloy
Influence of high-pressure torsion on the microstructure and the hardness of a Ti-rich high-entropy alloy
High-Pressure Torsion (HPT) is one of the most effective severe plastic deformation techniques in grain refinement. The goal of this study was to investigate the influence of HPT on the microstructure and hardness of a Ti-rich High-Entropy Alloy (HEA). The evolution of the grain size due to 1 turn of HPT was studied by transmission electron microscopy. Besides the refinement of the microstructure, a phase transition also occurred during HPT, as revealed by X-ray diffraction. The initial bcc structure transformed into a martensitic phase throughout the material. The features of this phase transformation were studied on a sample compressed to low strain values. The hardness as a function of the distance from the center in the HPT-processed disk was measured and correlated to the microstructure.
732-737
Heczel, Anita
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Lilensten, Lola
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Bourgon, Julie
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Perrière, Loic
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Couzinié, Jean Philippe
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Guillot, Ivan
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Dirras, Guy
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Huang, Yi
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Langdon, Terence G.
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Gubicza, Jenő
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January 2017
Heczel, Anita
aacdd77b-082a-4e75-8235-8959d2ca186b
Lilensten, Lola
16a09dd6-6212-49f8-87dc-1189de3c37f6
Bourgon, Julie
f9d80e57-f281-4515-8119-6dcd7662021f
Perrière, Loic
31ef6edf-7fcb-4d0c-99ec-1a90fed581be
Couzinié, Jean Philippe
ea0467db-07d3-4f67-97dc-3558e9366de7
Guillot, Ivan
8c1cd3e9-bdb6-4376-9d39-c5577f276649
Dirras, Guy
c9349b76-e64b-4723-9c4b-759caf756c7f
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Gubicza, Jenő
046ca28c-f226-40bc-a510-9f1bc0a3a29d
Heczel, Anita, Lilensten, Lola, Bourgon, Julie, Perrière, Loic, Couzinié, Jean Philippe, Guillot, Ivan, Dirras, Guy, Huang, Yi, Langdon, Terence G. and Gubicza, Jenő
(2017)
Influence of high-pressure torsion on the microstructure and the hardness of a Ti-rich high-entropy alloy.
Materials Science Forum, 879, .
(doi:10.4028/www.scientific.net/MSF.879.732).
Abstract
High-Pressure Torsion (HPT) is one of the most effective severe plastic deformation techniques in grain refinement. The goal of this study was to investigate the influence of HPT on the microstructure and hardness of a Ti-rich High-Entropy Alloy (HEA). The evolution of the grain size due to 1 turn of HPT was studied by transmission electron microscopy. Besides the refinement of the microstructure, a phase transition also occurred during HPT, as revealed by X-ray diffraction. The initial bcc structure transformed into a martensitic phase throughout the material. The features of this phase transformation were studied on a sample compressed to low strain values. The hardness as a function of the distance from the center in the HPT-processed disk was measured and correlated to the microstructure.
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Accepted/In Press date: 23 September 2016
e-pub ahead of print date: 15 November 2016
Published date: January 2017
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 402919
URI: http://eprints.soton.ac.uk/id/eprint/402919
ISSN: 1662-9752
PURE UUID: d29e5a57-5f6e-4572-ad5d-8bff8ba8a8a4
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Date deposited: 18 Nov 2016 14:39
Last modified: 16 Mar 2024 03:28
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Author:
Anita Heczel
Author:
Lola Lilensten
Author:
Julie Bourgon
Author:
Loic Perrière
Author:
Jean Philippe Couzinié
Author:
Ivan Guillot
Author:
Guy Dirras
Author:
Yi Huang
Author:
Jenő Gubicza
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