The characteristics of creep in metallic materials processed by severe plastic deformation
The characteristics of creep in metallic materials processed by severe plastic deformation
Processing through the application of severe plastic deformation (SPD), as in equal-channel angular pressing (ECAP), provides an opportunity for achieving exceptional grain refinement to the submicrometer or even the nanometer level. After SPD processing, these materials may be conveniently used for evaluating the effect of a reduced grain size on the creep behaviour at elevated temperatures under testing conditions of constant load or constant stress. This report provides an overview of the creep properties of ECAP-processed metals with an emphasis on the microstructural characteristics developed by SPD, on their thermal stability and especially on the creep mechanisms that control their flow behaviour. For convenience, these properties are generally compared with the creep behaviour of coarse-grained (CG) samples of the same materials tested under identical conditions.
creep, Equal-channel angular pressing, flow mechanisms, grain boundary, sliding, ultrafine grains
1506-1517
Kral, Petr
016e0cc9-ec90-4317-aebb-f854dbfd06ab
Dvorak, Jiri
966b3d49-f6fa-4d6e-990e-05c023114f1f
Sklenicka, Vaclav
bfe32781-c185-44b6-8c0e-504c5e2a846e
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
1 August 2019
Kral, Petr
016e0cc9-ec90-4317-aebb-f854dbfd06ab
Dvorak, Jiri
966b3d49-f6fa-4d6e-990e-05c023114f1f
Sklenicka, Vaclav
bfe32781-c185-44b6-8c0e-504c5e2a846e
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Kral, Petr, Dvorak, Jiri, Sklenicka, Vaclav and Langdon, Terence G.
(2019)
The characteristics of creep in metallic materials processed by severe plastic deformation.
Materials Transactions, 60 (8), .
(doi:10.2320/matertrans.MF201924).
Abstract
Processing through the application of severe plastic deformation (SPD), as in equal-channel angular pressing (ECAP), provides an opportunity for achieving exceptional grain refinement to the submicrometer or even the nanometer level. After SPD processing, these materials may be conveniently used for evaluating the effect of a reduced grain size on the creep behaviour at elevated temperatures under testing conditions of constant load or constant stress. This report provides an overview of the creep properties of ECAP-processed metals with an emphasis on the microstructural characteristics developed by SPD, on their thermal stability and especially on the creep mechanisms that control their flow behaviour. For convenience, these properties are generally compared with the creep behaviour of coarse-grained (CG) samples of the same materials tested under identical conditions.
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Accepted/In Press date: 21 May 2019
e-pub ahead of print date: 28 June 2019
Published date: 1 August 2019
Keywords:
creep, Equal-channel angular pressing, flow mechanisms, grain boundary, sliding, ultrafine grains
Identifiers
Local EPrints ID: 433387
URI: http://eprints.soton.ac.uk/id/eprint/433387
ISSN: 1345-9678
PURE UUID: a88350b2-555c-4f1d-b1b5-e4f0336536c2
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Date deposited: 15 Aug 2019 16:30
Last modified: 16 Mar 2024 03:28
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Author:
Petr Kral
Author:
Jiri Dvorak
Author:
Vaclav Sklenicka
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