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Calorimetric measurements of grain growth in ultrafine-grained nickel

Calorimetric measurements of grain growth in ultrafine-grained nickel
Calorimetric measurements of grain growth in ultrafine-grained nickel
The process of grain growth in ultrafine-grained nickel was studied using differential scanning calorimetry. Samples of nickel, with mean grain sizes in the range from 100 to 400 nm, were prepared by equal-channel angular pressing, high pressure torsion or combinations of both. It is shown using differential scanning calorimetry that grain growth in these structures begins at temperatures in the range from 500 to 700K and the measured activation energy for grain growth is close to the activation energy for grain boundary self-diffusion. There was also evidence for a decreasing activation energy in the samples prepared by high pressure torsion.
1605-8119
23-30
Zhilyaev, A.P.
fe22cdc1-590d-4bbd-bd1a-6ca18e3ee971
Nurislamova, G.V.
5d489c7e-36bd-47b3-9405-5fb59dc7cf93
Surinach, S.
51db2b25-0844-4165-9fe4-9721bb737ce7
Baro, M.D.
72fd8f28-3454-4f4e-a3fc-4d6442d9876c
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Zhilyaev, A.P.
fe22cdc1-590d-4bbd-bd1a-6ca18e3ee971
Nurislamova, G.V.
5d489c7e-36bd-47b3-9405-5fb59dc7cf93
Surinach, S.
51db2b25-0844-4165-9fe4-9721bb737ce7
Baro, M.D.
72fd8f28-3454-4f4e-a3fc-4d6442d9876c
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Zhilyaev, A.P., Nurislamova, G.V., Surinach, S., Baro, M.D. and Langdon, T.G. (2002) Calorimetric measurements of grain growth in ultrafine-grained nickel. Materials Physics and Mechanics, 5 (1), 23-30.

Record type: Article

Abstract

The process of grain growth in ultrafine-grained nickel was studied using differential scanning calorimetry. Samples of nickel, with mean grain sizes in the range from 100 to 400 nm, were prepared by equal-channel angular pressing, high pressure torsion or combinations of both. It is shown using differential scanning calorimetry that grain growth in these structures begins at temperatures in the range from 500 to 700K and the measured activation energy for grain growth is close to the activation energy for grain boundary self-diffusion. There was also evidence for a decreasing activation energy in the samples prepared by high pressure torsion.

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Published date: 2002

Identifiers

Local EPrints ID: 23790
URI: http://eprints.soton.ac.uk/id/eprint/23790
ISSN: 1605-8119
PURE UUID: cef317cd-df00-41cc-b2cb-9b9a852d670d
ORCID for T.G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

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Date deposited: 31 Mar 2006
Last modified: 23 Jul 2020 00:29

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Contributors

Author: A.P. Zhilyaev
Author: G.V. Nurislamova
Author: S. Surinach
Author: M.D. Baro
Author: T.G. Langdon ORCID iD

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