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Stability of microstructure in silver processed by severe plastic deformation

Stability of microstructure in silver processed by severe plastic deformation
Stability of microstructure in silver processed by severe plastic deformation
The stability of the microstructure of pure silver processed by equal channel angular pressing at room temperature was studied by transmission electron microscopy and X-ray line profile analysis. After processing by 1 pass the microstructure was stable, whereas after 8 passes a static recovery/recrystallization of the severely deformed microstructure was observed a long time after deformation when the material was stored at room temperature. This unusual behavior is attributed to the high degree of dislocation dissociation due to the very low stacking fault energy of silver. The highly dissociated dislocations may be annihilated a long time after deformation due to thermal activation assisted by stresses which evolve in the severely deformed microstructures.
884-887
Gubicza, Jeno
2a3c6ad7-cd7b-49d0-a0cc-1d307b51528c
Chinh, Nguyen Q.
8e075269-61a9-469c-8f71-3d52eb37dadc
Lábár, János L.
e623b9fd-4dfe-438c-af04-6665b1ecc67c
Tichy, Geza
1c6dd76d-e3d5-44a6-9b0c-8f6eb8e78d2b
Hegedüs, Zoltán
2741cb1b-8fe2-44f2-9f56-91b1de5ce7aa
Xu, Cheng
af526865-aee4-4ef6-8174-def5c38149a2
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Gubicza, Jeno
2a3c6ad7-cd7b-49d0-a0cc-1d307b51528c
Chinh, Nguyen Q.
8e075269-61a9-469c-8f71-3d52eb37dadc
Lábár, János L.
e623b9fd-4dfe-438c-af04-6665b1ecc67c
Tichy, Geza
1c6dd76d-e3d5-44a6-9b0c-8f6eb8e78d2b
Hegedüs, Zoltán
2741cb1b-8fe2-44f2-9f56-91b1de5ce7aa
Xu, Cheng
af526865-aee4-4ef6-8174-def5c38149a2
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Gubicza, Jeno, Chinh, Nguyen Q., Lábár, János L., Tichy, Geza, Hegedüs, Zoltán, Xu, Cheng and Langdon, Terence G. (2009) Stability of microstructure in silver processed by severe plastic deformation. International Journal of Materials Research, 6 (100), 884-887. (doi:10.3139/146.110113).

Record type: Article

Abstract

The stability of the microstructure of pure silver processed by equal channel angular pressing at room temperature was studied by transmission electron microscopy and X-ray line profile analysis. After processing by 1 pass the microstructure was stable, whereas after 8 passes a static recovery/recrystallization of the severely deformed microstructure was observed a long time after deformation when the material was stored at room temperature. This unusual behavior is attributed to the high degree of dislocation dissociation due to the very low stacking fault energy of silver. The highly dissociated dislocations may be annihilated a long time after deformation due to thermal activation assisted by stresses which evolve in the severely deformed microstructures.

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More information

Published date: 2009
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 67674
URI: https://eprints.soton.ac.uk/id/eprint/67674
PURE UUID: 3de37310-62e5-4e3e-bc42-80277b045445
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 02 Sep 2009
Last modified: 20 Jul 2019 01:03

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Contributors

Author: Jeno Gubicza
Author: Nguyen Q. Chinh
Author: János L. Lábár
Author: Geza Tichy
Author: Zoltán Hegedüs
Author: Cheng Xu

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