The effect of impurity level on ultrafine-grained microstructures and their stability in low stacking fault energy silver
The effect of impurity level on ultrafine-grained microstructures and their stability in low stacking fault energy silver
The effect of impurity content on the evolution of microstructure in low stacking fault energy silver processed by severe plastic deformation (SPD) was studied. The SPD-processing was carried out on 4N5 and 4N purity Ag samples by equal-channel angular pressing (ECAP) up to 16 passes. It was found that, although the minimum grain size and the maximum dislocation density were not affected by the different impurity atom content, there is a lower degree of twinning in the less pure material for high number of passes. The small increase of impurity level from 4N5 to 4N in Ag resulted in a significantly better thermal stability at room temperature for the ultrafine-grained microstructures obtained by ECAP
severe plastic deformation, equal-channel angular pressing, silver, stacking fault energy, thermal stability
8694-8699
Hegedűs, Zoltán
8f5f6b64-2472-48a4-ad70-87080a2d87b5
Gubicza, Jenő
046ca28c-f226-40bc-a510-9f1bc0a3a29d
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Chinh, Nguyen Q.
8e075269-61a9-469c-8f71-3d52eb37dadc
Fogarassy, Zsolt
6190b346-a899-4683-a952-f92633281086
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
15 November 2011
Hegedűs, Zoltán
8f5f6b64-2472-48a4-ad70-87080a2d87b5
Gubicza, Jenő
046ca28c-f226-40bc-a510-9f1bc0a3a29d
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Chinh, Nguyen Q.
8e075269-61a9-469c-8f71-3d52eb37dadc
Fogarassy, Zsolt
6190b346-a899-4683-a952-f92633281086
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Hegedűs, Zoltán, Gubicza, Jenő, Kawasaki, Megumi, Chinh, Nguyen Q., Fogarassy, Zsolt and Langdon, Terence G.
(2011)
The effect of impurity level on ultrafine-grained microstructures and their stability in low stacking fault energy silver.
Materials Science and Engineering: A, 528 (29-30), .
(doi:10.1016/j.msea.2011.08.034).
Abstract
The effect of impurity content on the evolution of microstructure in low stacking fault energy silver processed by severe plastic deformation (SPD) was studied. The SPD-processing was carried out on 4N5 and 4N purity Ag samples by equal-channel angular pressing (ECAP) up to 16 passes. It was found that, although the minimum grain size and the maximum dislocation density were not affected by the different impurity atom content, there is a lower degree of twinning in the less pure material for high number of passes. The small increase of impurity level from 4N5 to 4N in Ag resulted in a significantly better thermal stability at room temperature for the ultrafine-grained microstructures obtained by ECAP
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e-pub ahead of print date: 26 August 2011
Published date: 15 November 2011
Keywords:
severe plastic deformation, equal-channel angular pressing, silver, stacking fault energy, thermal stability
Organisations:
Bioengineering Group
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Local EPrints ID: 335432
URI: http://eprints.soton.ac.uk/id/eprint/335432
ISSN: 0921-5093
PURE UUID: 287c019b-22a1-4d3b-942c-2a048fd7d326
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Date deposited: 14 Mar 2012 12:26
Last modified: 15 Mar 2024 03:13
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Author:
Zoltán Hegedűs
Author:
Jenő Gubicza
Author:
Megumi Kawasaki
Author:
Nguyen Q. Chinh
Author:
Zsolt Fogarassy
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