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An evaluation of microstructure and microhardness in copper subjected to ultra-high strains

Zhilyaev, A.P., Swaminatham, S., Gimazov, A.A., McNelley, T.R. and Langdon, T.G. (2008) An evaluation of microstructure and microhardness in copper subjected to ultra-high strains Journal of Materials Science, 43, (23-24), pp. 7451-7456. (doi:10.1007/s10853-008-2714-y).

Record type: Article

Abstract

The microstructure and microhardness of copper subjected to large strains either using one or a combination of severe plastic deformation (SPD) processing techniques was evaluated. The individual SPD techniques used include equal-channel angular pressing (ECAP), high-pressure torsion (HPT), and chip formation during machining (M). Microstructural characterization using orientation imaging microscopy provided detailed information on the grain sizes and misorientation statistics after different processing routes. Vickers indentation analysis was used to evaluate the hardness of the deformed samples. The results show that excellent microstructures and properties are achieved when these three processes are used in combination, including grain sizes in the range of ~0.2–0.3 ?m and hardness values up to >1,900 MPa.

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Published date: December 2008
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 64573
URI: http://eprints.soton.ac.uk/id/eprint/64573
ISSN: 0022-2461
PURE UUID: ced543bc-c3c8-4568-bcc4-328e8b479099
ORCID for T.G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 08 Jan 2009
Last modified: 17 Jul 2017 14:12

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Contributors

Author: A.P. Zhilyaev
Author: S. Swaminatham
Author: A.A. Gimazov
Author: T.R. McNelley
Author: T.G. Langdon ORCID iD

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