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Evolution of homogeneity in oxygen-free copper processed by either ECAP or HPT

Evolution of homogeneity in oxygen-free copper processed by either ECAP or HPT
Evolution of homogeneity in oxygen-free copper processed by either ECAP or HPT
Oxygen-free copper having a commercial purity of 99.95 wt.% was processed at room temperature by severe plastic deformation (SPD) using either equal-channel angular pressing (ECAP) or high-pressure torsion (HPT). The ECAP billets were processed through a die having an internal angle of 110° for up to 8 passes and the HPT discs were processed under an applied pressure of 6.0 GPa for up to 10 turns. The evolution of microstructural homogeneity was investigated for each process by measuring the grain sizes and recording the distributions of the microhardness values on the cross-sectional planes of the ECAP billets and on the disc surface planes of the HPT samples. For both sets of measurements, the hardness values were recorded following a rectilinear grid pattern in order to generate colour-coded maps of the hardness distributions.
1605-8127
47-54
Alawadhi, Meshal Y.
571b006e-d517-40da-bdf0-02f9b970d8f6
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Alawadhi, Meshal Y., Huang, Yi and Langdon, Terence G. (2017) Evolution of homogeneity in oxygen-free copper processed by either ECAP or HPT Reviews on Advanced Materials Science, 50, (1/2), pp. 47-54.

Alawadhi, Meshal Y., Huang, Yi and Langdon, Terence G. (2017) Evolution of homogeneity in oxygen-free copper processed by either ECAP or HPT Reviews on Advanced Materials Science, 50, (1/2), pp. 47-54.

Record type: Article

Abstract

Oxygen-free copper having a commercial purity of 99.95 wt.% was processed at room temperature by severe plastic deformation (SPD) using either equal-channel angular pressing (ECAP) or high-pressure torsion (HPT). The ECAP billets were processed through a die having an internal angle of 110° for up to 8 passes and the HPT discs were processed under an applied pressure of 6.0 GPa for up to 10 turns. The evolution of microstructural homogeneity was investigated for each process by measuring the grain sizes and recording the distributions of the microhardness values on the cross-sectional planes of the ECAP billets and on the disc surface planes of the HPT samples. For both sets of measurements, the hardness values were recorded following a rectilinear grid pattern in order to generate colour-coded maps of the hardness distributions.

Text Alawadhi-RAMS 2017-accepted manuscript - Accepted Manuscript
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More information

Accepted/In Press date: 8 March 2017
e-pub ahead of print date: 26 August 2017
Published date: 28 August 2017
Organisations: Engineering Mats & Surface Engineerg Gp, Education Hub

Identifiers

Local EPrints ID: 407466
URI: http://eprints.soton.ac.uk/id/eprint/407466
ISSN: 1605-8127
PURE UUID: 71700775-366c-4c4a-837d-e4ec1c87f981
ORCID for Yi Huang: ORCID iD orcid.org/0000-0001-9259-8123
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 12 Apr 2017 01:04
Last modified: 25 Oct 2017 04:01

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