Using post-deformation annealing to optimize the properties of a ZK60 magnesium alloy processed by high-pressure torsion
Using post-deformation annealing to optimize the properties of a ZK60 magnesium alloy processed by high-pressure torsion
A ZK60 magnesium alloy with an initial grain size of ~10 μm was processed by high-pressure torsion (HPT) through 5 revolutions under a constant compressive pressure of 2.0 GPa with a rotation speed of 1 rpm. An average grain size of ~700 nm was achieved after HPT with a high fraction of high-angle grain boundaries. Tensile experiments at room temperature showed
poor ductility. However, a combination of reasonable ductility and good strength was achieved with post-HPT annealing by subjecting samples to high temperatures in the range of 473 to 548 K for 10 or 20 min. The grain size and texture changes were also examined by electron back scattered
diffraction (EBSD) and the results compared to long-term annealing for 2500 min at 450 K. The results of this study suggest that a post-HPT annealing for a short period of time may be effective in achieving a reasonable combination of strength and ductility.
1700703 (1-10)
Torbati-Sarraf, Seyed A.
21270cac-1afd-450f-abbe-3687f9b0726a
Sabbaghianrad, Shima
2dbc35ee-f341-42fd-9081-94ef3e9b10b0
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
February 2018
Torbati-Sarraf, Seyed A.
21270cac-1afd-450f-abbe-3687f9b0726a
Sabbaghianrad, Shima
2dbc35ee-f341-42fd-9081-94ef3e9b10b0
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Torbati-Sarraf, Seyed A., Sabbaghianrad, Shima and Langdon, Terence G.
(2018)
Using post-deformation annealing to optimize the properties of a ZK60 magnesium alloy processed by high-pressure torsion.
Advanced Engineering Materials, 20 (2), .
(doi:10.1002/adem.201700703).
Abstract
A ZK60 magnesium alloy with an initial grain size of ~10 μm was processed by high-pressure torsion (HPT) through 5 revolutions under a constant compressive pressure of 2.0 GPa with a rotation speed of 1 rpm. An average grain size of ~700 nm was achieved after HPT with a high fraction of high-angle grain boundaries. Tensile experiments at room temperature showed
poor ductility. However, a combination of reasonable ductility and good strength was achieved with post-HPT annealing by subjecting samples to high temperatures in the range of 473 to 548 K for 10 or 20 min. The grain size and texture changes were also examined by electron back scattered
diffraction (EBSD) and the results compared to long-term annealing for 2500 min at 450 K. The results of this study suggest that a post-HPT annealing for a short period of time may be effective in achieving a reasonable combination of strength and ductility.
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Accepted/In Press date: 11 September 2017
e-pub ahead of print date: 16 October 2017
Published date: February 2018
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Local EPrints ID: 413971
URI: http://eprints.soton.ac.uk/id/eprint/413971
ISSN: 1438-1656
PURE UUID: 19f42918-ea1d-4c0b-a1c8-c428c3f25bb0
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Date deposited: 12 Sep 2017 16:31
Last modified: 16 Mar 2024 05:43
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Author:
Seyed A. Torbati-Sarraf
Author:
Shima Sabbaghianrad
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