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 res...

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Main Authors: Meshal Y. Alawadhi, Shima Sabbaghianrad, Yi Huang, Terence. G. Langdon
Format: Article
Language:English
Published: Elsevier 2017-10-01
Series:Journal of Materials Research and Technology
Online Access:http://www.sciencedirect.com/science/article/pii/S2238785417301606
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spelling doaj-b7b14234be5442de807fcb2f16044ebb2020-11-25T04:03:53ZengElsevierJournal of Materials Research and Technology2238-78542017-10-0164369377Direct influence of recovery behaviour on mechanical properties in oxygen-free copper processed using different SPD techniques: HPT and ECAPMeshal Y. Alawadhi0Shima Sabbaghianrad1Yi Huang2Terence. G. Langdon3Materials Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton, United Kingdom; Corresponding author.Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, United States of AmericaMaterials Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton, United Kingdom; Corresponding author.Materials Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton, United KingdomOxygen-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 â¼12 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. Keywords: Ductility, Equal-channel angular pressing, High-pressure torsion, Recovery, Strain rate sensitivity, Work hardeninghttp://www.sciencedirect.com/science/article/pii/S2238785417301606
collection DOAJ
language English
format Article
sources DOAJ
author Meshal Y. Alawadhi
Shima Sabbaghianrad
Yi Huang
Terence. G. Langdon
spellingShingle Meshal Y. Alawadhi
Shima Sabbaghianrad
Yi Huang
Terence. G. Langdon
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
author_facet Meshal Y. Alawadhi
Shima Sabbaghianrad
Yi Huang
Terence. G. Langdon
author_sort Meshal Y. Alawadhi
title Direct influence of recovery behaviour on mechanical properties in oxygen-free copper processed using different SPD techniques: HPT and ECAP
title_short Direct influence of recovery behaviour on mechanical properties in oxygen-free copper processed using different SPD techniques: HPT and ECAP
title_full Direct influence of recovery behaviour on mechanical properties in oxygen-free copper processed using different SPD techniques: HPT and ECAP
title_fullStr Direct influence of recovery behaviour on mechanical properties in oxygen-free copper processed using different SPD techniques: HPT and ECAP
title_full_unstemmed Direct influence of recovery behaviour on mechanical properties in oxygen-free copper processed using different SPD techniques: HPT and ECAP
title_sort direct influence of recovery behaviour on mechanical properties in oxygen-free copper processed using different spd techniques: hpt and ecap
publisher Elsevier
series Journal of Materials Research and Technology
issn 2238-7854
publishDate 2017-10-01
description 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 â¼12 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. Keywords: Ductility, Equal-channel angular pressing, High-pressure torsion, Recovery, Strain rate sensitivity, Work hardening
url http://www.sciencedirect.com/science/article/pii/S2238785417301606
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AT shimasabbaghianrad directinfluenceofrecoverybehaviouronmechanicalpropertiesinoxygenfreecopperprocessedusingdifferentspdtechniqueshptandecap
AT yihuang directinfluenceofrecoverybehaviouronmechanicalpropertiesinoxygenfreecopperprocessedusingdifferentspdtechniqueshptandecap
AT terenceglangdon directinfluenceofrecoverybehaviouronmechanicalpropertiesinoxygenfreecopperprocessedusingdifferentspdtechniqueshptandecap
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