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A magnesium-aluminium composite produced by high-pressure torsion

A magnesium-aluminium composite produced by high-pressure torsion
A magnesium-aluminium composite produced by high-pressure torsion

A magnesium/aluminium composite was produced by room temperature consolidation through high-pressure torsion (HPT) processing. Half-discs of the pure metals were placed side-by-side and subjected to different numbers of turns. The initially reduced interface between the phases gradually increased with increasing rotation. The composite displayed a significant ductility even after 10 turns. The distribution of hardness in the HPT-processed discs was bi-modal in the early stages of processing. As the number of turns increased and the thickness of the phases decreased there was a noticeable increase in hardness. The hardness values of the composite further increased after thermal treatment due to the formation of intermetallics within the interface between the magnesium and aluminium-rich phases.

Aluminium composite, High-pressure torsion, Intermetallics, Magnesium, Thermal treatment
0925-8388
421-426
Castro, Moara M.
cb6729d8-fd38-46a4-91e3-a87da53d0e99
Sabbaghianrad, S.
a061a940-ba10-4c18-945c-142464addb36
Pereira, Pedro Henrique R.
f033a8a6-ddad-4f6a-91ec-521a3358e4c2
Mazzer, Eric M.
e22d681e-711d-429f-8fcf-765af6f84c72
Isaac, Augusta
8bbd9d2d-a43b-442f-8d29-ae1a319ca616
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Figueiredo, Roberto B.
184313b8-9f00-451a-bfb1-6d80a2c89b78
Castro, Moara M.
cb6729d8-fd38-46a4-91e3-a87da53d0e99
Sabbaghianrad, S.
a061a940-ba10-4c18-945c-142464addb36
Pereira, Pedro Henrique R.
f033a8a6-ddad-4f6a-91ec-521a3358e4c2
Mazzer, Eric M.
e22d681e-711d-429f-8fcf-765af6f84c72
Isaac, Augusta
8bbd9d2d-a43b-442f-8d29-ae1a319ca616
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Figueiredo, Roberto B.
184313b8-9f00-451a-bfb1-6d80a2c89b78

Castro, Moara M., Sabbaghianrad, S., Pereira, Pedro Henrique R., Mazzer, Eric M., Isaac, Augusta, Langdon, Terence G. and Figueiredo, Roberto B. (2019) A magnesium-aluminium composite produced by high-pressure torsion. Journal of Alloys and Compounds, 804, 421-426. (doi:10.1016/j.jallcom.2019.07.007).

Record type: Article

Abstract

A magnesium/aluminium composite was produced by room temperature consolidation through high-pressure torsion (HPT) processing. Half-discs of the pure metals were placed side-by-side and subjected to different numbers of turns. The initially reduced interface between the phases gradually increased with increasing rotation. The composite displayed a significant ductility even after 10 turns. The distribution of hardness in the HPT-processed discs was bi-modal in the early stages of processing. As the number of turns increased and the thickness of the phases decreased there was a noticeable increase in hardness. The hardness values of the composite further increased after thermal treatment due to the formation of intermetallics within the interface between the magnesium and aluminium-rich phases.

Text
Castro-JAC-2019 - Accepted Manuscript
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More information

Accepted/In Press date: 1 July 2019
e-pub ahead of print date: 2 July 2019
Published date: 5 October 2019
Keywords: Aluminium composite, High-pressure torsion, Intermetallics, Magnesium, Thermal treatment

Identifiers

Local EPrints ID: 432838
URI: http://eprints.soton.ac.uk/id/eprint/432838
ISSN: 0925-8388
PURE UUID: 8497925b-3967-45fd-9d8f-aec74f315497
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 29 Jul 2019 16:30
Last modified: 07 Oct 2020 06:44

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Contributors

Author: Moara M. Castro
Author: S. Sabbaghianrad
Author: Pedro Henrique R. Pereira
Author: Eric M. Mazzer
Author: Augusta Isaac
Author: Roberto B. Figueiredo

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