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Deformation heterogeneity on the cross-sectional planes of a magnesium alloy processed by high-pressure torsion

Deformation heterogeneity on the cross-sectional planes of a magnesium alloy processed by high-pressure torsion
Deformation heterogeneity on the cross-sectional planes of a magnesium alloy processed by high-pressure torsion
Disks of an extruded AZ31 magnesium alloy were processed by high-pressure torsion (HPT) at a pressure of 6.0 GPa through 1/4, 1, and 5 turns either at room temperature (296 K (23 °C)) or at an elevated temperature of 463 K (190 °C). The cross-sectional planes of the disks were examined after processing, and it is shown that there is a high level of heterogeneity throughout all of the samples. This heterogeneity is revealed through the nature of the flow patterns, through the distributions of grain sizes, and by comprehensive microhardness measurements. The results demonstrate that it is possible to double the strength of the alloy in some areas of the disk after processing through 5 turns at room temperature
1073-5623
3013-3021
Figueiredo, Roberto B.
2e0060b8-6368-4d87-825a-c3cb90e92145
Aguilar, Maria Teresa P.
a3ec56c8-460d-4932-abde-b4f281fa5c4c
Cetlin, Paulo R.
6fe5efb8-7976-4d56-8aae-08cbf76b9628
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Figueiredo, Roberto B.
2e0060b8-6368-4d87-825a-c3cb90e92145
Aguilar, Maria Teresa P.
a3ec56c8-460d-4932-abde-b4f281fa5c4c
Cetlin, Paulo R.
6fe5efb8-7976-4d56-8aae-08cbf76b9628
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Figueiredo, Roberto B., Aguilar, Maria Teresa P., Cetlin, Paulo R. and Langdon, Terence G. (2011) Deformation heterogeneity on the cross-sectional planes of a magnesium alloy processed by high-pressure torsion. Metallurgical and Materials Transactions A, 42 (10), 3013-3021. (doi:10.1007/s11661-011-0609-z).

Record type: Article

Abstract

Disks of an extruded AZ31 magnesium alloy were processed by high-pressure torsion (HPT) at a pressure of 6.0 GPa through 1/4, 1, and 5 turns either at room temperature (296 K (23 °C)) or at an elevated temperature of 463 K (190 °C). The cross-sectional planes of the disks were examined after processing, and it is shown that there is a high level of heterogeneity throughout all of the samples. This heterogeneity is revealed through the nature of the flow patterns, through the distributions of grain sizes, and by comprehensive microhardness measurements. The results demonstrate that it is possible to double the strength of the alloy in some areas of the disk after processing through 5 turns at room temperature

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More information

e-pub ahead of print date: February 2011
Published date: October 2011
Organisations: Engineering Science Unit

Identifiers

Local EPrints ID: 337562
URI: http://eprints.soton.ac.uk/id/eprint/337562
ISSN: 1073-5623
PURE UUID: bb7cd5c2-2b83-4bf7-afc5-1b8f7aa3ebf0
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

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Date deposited: 27 Apr 2012 13:26
Last modified: 15 Mar 2024 03:13

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Contributors

Author: Roberto B. Figueiredo
Author: Maria Teresa P. Aguilar
Author: Paulo R. Cetlin

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