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Influence of crystal orientation on the processing of copper single crystals by ECAP

Influence of crystal orientation on the processing of copper single crystals by ECAP
Influence of crystal orientation on the processing of copper single crystals by ECAP
Single crystals of high-purity copper, having two different orientations, were pressed through one pass in equal-channel angular pressing (ECAP) at room temperature and then examined using several different analytical techniques. For both orientations, it is shown that elongated arrays of cells or subgrains are formed in the first pass with their long axes aligned parallel to the primary (111) [110] slip system. The average width of these subgrains was measured as ?0.2 ?m which is similar to the equilibrium grain size reported in polycrystalline Cu after processing by ECAP. These results confirm earlier observations using an aluminum single crystal except only that the subgrain width in copper is significantly smaller. This difference is attributed to the lower stacking-fault energy in copper and the consequent low rate of recovery.
0022-2461
1501-1511
Fukuda, P.
b299f023-9544-41e1-8905-faefaf35396f
Furukawa, M.
8ea754fa-cd31-481d-b6b7-6a6968b1ee0e
Oh-ishi, K.
35ea2a6a-7c9d-470e-b443-53b60e41dc62
Horita, Z.
84a80017-cbaf-4713-8346-6f69ac7ea63e
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Fukuda, P.
b299f023-9544-41e1-8905-faefaf35396f
Furukawa, M.
8ea754fa-cd31-481d-b6b7-6a6968b1ee0e
Oh-ishi, K.
35ea2a6a-7c9d-470e-b443-53b60e41dc62
Horita, Z.
84a80017-cbaf-4713-8346-6f69ac7ea63e
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Fukuda, P., Furukawa, M., Oh-ishi, K., Horita, Z. and Langdon, T.G. (2007) Influence of crystal orientation on the processing of copper single crystals by ECAP. Journal of Materials Science, 42 (5), 1501-1511. (doi:10.1007/s10853-006-0753-9).

Record type: Article

Abstract

Single crystals of high-purity copper, having two different orientations, were pressed through one pass in equal-channel angular pressing (ECAP) at room temperature and then examined using several different analytical techniques. For both orientations, it is shown that elongated arrays of cells or subgrains are formed in the first pass with their long axes aligned parallel to the primary (111) [110] slip system. The average width of these subgrains was measured as ?0.2 ?m which is similar to the equilibrium grain size reported in polycrystalline Cu after processing by ECAP. These results confirm earlier observations using an aluminum single crystal except only that the subgrain width in copper is significantly smaller. This difference is attributed to the lower stacking-fault energy in copper and the consequent low rate of recovery.

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More information

Published date: March 2007
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 48887
URI: http://eprints.soton.ac.uk/id/eprint/48887
ISSN: 0022-2461
PURE UUID: 05f19143-ae35-44a2-8786-f3b1449efbe5
ORCID for T.G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 17 Oct 2007
Last modified: 16 Mar 2024 03:28

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Contributors

Author: P. Fukuda
Author: M. Furukawa
Author: K. Oh-ishi
Author: Z. Horita
Author: T.G. Langdon ORCID iD

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