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Direct influence of recovery behaviour on mechanical properties in oxygen-free copper processed using different SPD techniques: HPT and ECAP

Direct influence of recovery behaviour on mechanical properties in oxygen-free copper processed using different SPD techniques: HPT and ECAP
Direct influence of recovery behaviour on mechanical properties in oxygen-free copper processed using different SPD techniques: HPT and ECAP
Oxygen-free copper of 99.95 wt.% purity was severely deformed at room temperature by two modes of severe plastic deformation, equal-channel angular pressing (ECAP) and high-pressure torsion (HPT). ECAP was performed using 4, 16 and 24 passes, and HPT was performed using 1/2, 1 and 10 turns. The results show that while recovery occurs during both ECAP and HPT processing, copper shows a faster recovery rate with HPT processing than ECAP. The occurrence of recovery was observed at an equivalent strain exceeding ~12 that led to an enhancement in the uniform plastic deformation. The influence of recovery behaviour on the mechanical properties was investigated using X-ray diffraction, microhardness and tensile testing.
2238-7854
Alawadhi, Meshal Y
571b006e-d517-40da-bdf0-02f9b970d8f6
Sabbaghianrad, Shima
3dc6b379-d70b-4990-9a1b-4d3b2703a508
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Alawadhi, Meshal Y
571b006e-d517-40da-bdf0-02f9b970d8f6
Sabbaghianrad, Shima
3dc6b379-d70b-4990-9a1b-4d3b2703a508
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Alawadhi, Meshal Y, Sabbaghianrad, Shima, Huang, Yi and Langdon, Terence G (2017) Direct influence of recovery behaviour on mechanical properties in oxygen-free copper processed using different SPD techniques: HPT and ECAP Journal of Materials Research and Technology (doi:10.1016/j.jmrt.2017.05.005).

Record type: Article

Abstract

Oxygen-free copper of 99.95 wt.% purity was severely deformed at room temperature by two modes of severe plastic deformation, equal-channel angular pressing (ECAP) and high-pressure torsion (HPT). ECAP was performed using 4, 16 and 24 passes, and HPT was performed using 1/2, 1 and 10 turns. The results show that while recovery occurs during both ECAP and HPT processing, copper shows a faster recovery rate with HPT processing than ECAP. The occurrence of recovery was observed at an equivalent strain exceeding ~12 that led to an enhancement in the uniform plastic deformation. The influence of recovery behaviour on the mechanical properties was investigated using X-ray diffraction, microhardness and tensile testing.

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More information

Accepted/In Press date: 15 May 2017
e-pub ahead of print date: 26 June 2017
Organisations: Engineering Mats & Surface Engineerg Gp, Education Hub

Identifiers

Local EPrints ID: 410461
URI: http://eprints.soton.ac.uk/id/eprint/410461
ISSN: 2238-7854
PURE UUID: 17e7ee6d-f730-4263-b995-e562771e3b7f
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: 08 Jun 2017 16:31
Last modified: 15 Aug 2017 16:31

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Contributors

Author: Meshal Y Alawadhi
Author: Shima Sabbaghianrad
Author: Yi Huang ORCID iD

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