Microhardness, microstructure and tensile behavior of an AZ31 magnesium alloy processed by high-pressure torsion
Microhardness, microstructure and tensile behavior of an AZ31 magnesium alloy processed by high-pressure torsion
An AZ31 magnesium alloy was processed by high-pressure torsion (HPT) at room temperature under an imposed pressure of 6.0 GPa. Microstructural analysis showed that the HPT processing introduced significant grain refinement with a reduction in grain size from ~35 ?m in the initial annealed condition to ~110 nm after ten turns of HPT. Microhardness measurements showed that a reasonable level of hardness homogeneity was achieved across the disk processed through ten turns. The results from tensile testing demonstrated that the ultrafine-grained (UFG) AZ31 alloy processed by HPT exhibits high ductility with a maximum elongation of ~400 % at the relatively low testing temperature of 423 K. The results confirm that the UFG AZ31 magnesium alloy processed by HPT through ten turns has a strong potential for use in micro-forming applications.
7424-7436
Xu, Jie
593871b5-a17a-4e0f-ae0e-7e48b1aadd99
Wang, Xinwei
581ee74f-f1e2-4fc3-9868-e1a4e28f98d1
Shirooyeh, Mahmood
777d37e5-09d0-4c80-8e9d-28e8d24006d1
Xing, Guangnan
96d51b4c-ccea-478c-bffa-dc16103a1f78
Shan, Debin
fd8652eb-1eeb-4ae2-bcc4-102320f3c2d7
Guo, Bin
6454155d-fa5f-480b-8747-88d06498a923
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
November 2015
Xu, Jie
593871b5-a17a-4e0f-ae0e-7e48b1aadd99
Wang, Xinwei
581ee74f-f1e2-4fc3-9868-e1a4e28f98d1
Shirooyeh, Mahmood
777d37e5-09d0-4c80-8e9d-28e8d24006d1
Xing, Guangnan
96d51b4c-ccea-478c-bffa-dc16103a1f78
Shan, Debin
fd8652eb-1eeb-4ae2-bcc4-102320f3c2d7
Guo, Bin
6454155d-fa5f-480b-8747-88d06498a923
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Xu, Jie, Wang, Xinwei, Shirooyeh, Mahmood, Xing, Guangnan, Shan, Debin, Guo, Bin and Langdon, Terence G.
(2015)
Microhardness, microstructure and tensile behavior of an AZ31 magnesium alloy processed by high-pressure torsion.
Journal of Materials Science, 50 (22), .
(doi:10.1007/s10853-015-9300-x).
Abstract
An AZ31 magnesium alloy was processed by high-pressure torsion (HPT) at room temperature under an imposed pressure of 6.0 GPa. Microstructural analysis showed that the HPT processing introduced significant grain refinement with a reduction in grain size from ~35 ?m in the initial annealed condition to ~110 nm after ten turns of HPT. Microhardness measurements showed that a reasonable level of hardness homogeneity was achieved across the disk processed through ten turns. The results from tensile testing demonstrated that the ultrafine-grained (UFG) AZ31 alloy processed by HPT exhibits high ductility with a maximum elongation of ~400 % at the relatively low testing temperature of 423 K. The results confirm that the UFG AZ31 magnesium alloy processed by HPT through ten turns has a strong potential for use in micro-forming applications.
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e-pub ahead of print date: 11 August 2015
Published date: November 2015
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 382385
URI: http://eprints.soton.ac.uk/id/eprint/382385
ISSN: 0022-2461
PURE UUID: 70168b02-fc5f-4535-8aba-c417becb771a
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Date deposited: 27 Oct 2015 10:37
Last modified: 15 Mar 2024 03:14
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Author:
Jie Xu
Author:
Xinwei Wang
Author:
Mahmood Shirooyeh
Author:
Guangnan Xing
Author:
Debin Shan
Author:
Bin Guo
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