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An investigation of strain‐softening phenomenon in Al–0.1% Mg alloy during high‐pressure torsion processing

An investigation of strain‐softening phenomenon in Al–0.1% Mg alloy during high‐pressure torsion processing
An investigation of strain‐softening phenomenon in Al–0.1% Mg alloy during high‐pressure torsion processing
An Al–0.1% Mg alloy is processed by high‐pressure torsion (HPT) at room temperature. The Al–0.1% Mg alloy displays strain‐softening phenomenon through hardness evolution: the hardness values in the disc center area are higher than at the disc edge area after 1/2, 1, and 3 turns, and the size of the hard region in the disc center gradually reduces as the number of turns increases from 1/2 to 3 turns. The hardness values evolve toward homogeneity along the disc diameters after 5 and 10 turns. Electron backscatter diffraction (EBSD) and X‐ray line profile analysis suggest that the lower hardness values at the disc edge area in the Al–0.1% Mg alloy are related to a recovery/recrystallization mechanism where the material is subjected to heavy straining.
Al-0.1% Mg alloy, HPT, X-ray, hardness, high-pressure torsion, microstructure
1438-1656
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Millet, Justine
3757d962-34aa-4aae-8ed7-3519dfaf20a1
Zhang, Nian X.
a70eabff-2be8-4e4e-9a2d-a1f2196bd420
Jenei, Péter
19304e34-fb5d-486e-bccc-10fcfab1b814
Gubicza, Jenő
e43bdde3-aee3-4542-9cff-cb80fa3caa99
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Millet, Justine
3757d962-34aa-4aae-8ed7-3519dfaf20a1
Zhang, Nian X.
a70eabff-2be8-4e4e-9a2d-a1f2196bd420
Jenei, Péter
19304e34-fb5d-486e-bccc-10fcfab1b814
Gubicza, Jenő
e43bdde3-aee3-4542-9cff-cb80fa3caa99
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Huang, Yi, Millet, Justine, Zhang, Nian X., Jenei, Péter, Gubicza, Jenő and Langdon, Terence G. (2020) An investigation of strain‐softening phenomenon in Al–0.1% Mg alloy during high‐pressure torsion processing. Advanced Engineering Materials, 22 (10), [1901578]. (doi:10.1002/adem.201901578).

Record type: Article

Abstract

An Al–0.1% Mg alloy is processed by high‐pressure torsion (HPT) at room temperature. The Al–0.1% Mg alloy displays strain‐softening phenomenon through hardness evolution: the hardness values in the disc center area are higher than at the disc edge area after 1/2, 1, and 3 turns, and the size of the hard region in the disc center gradually reduces as the number of turns increases from 1/2 to 3 turns. The hardness values evolve toward homogeneity along the disc diameters after 5 and 10 turns. Electron backscatter diffraction (EBSD) and X‐ray line profile analysis suggest that the lower hardness values at the disc edge area in the Al–0.1% Mg alloy are related to a recovery/recrystallization mechanism where the material is subjected to heavy straining.

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YH_Al-0.1 Mg_accepted - Accepted Manuscript
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More information

Accepted/In Press date: 10 February 2020
e-pub ahead of print date: 17 February 2020
Published date: 22 October 2020
Keywords: Al-0.1% Mg alloy, HPT, X-ray, hardness, high-pressure torsion, microstructure

Identifiers

Local EPrints ID: 438540
URI: http://eprints.soton.ac.uk/id/eprint/438540
ISSN: 1438-1656
PURE UUID: e26e60a5-30a9-4377-9c89-0fa6ac5045af
ORCID for Yi Huang: ORCID iD orcid.org/0000-0001-9259-8123
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 16 Mar 2020 17:30
Last modified: 26 Nov 2021 02:57

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Contributors

Author: Yi Huang ORCID iD
Author: Justine Millet
Author: Nian X. Zhang
Author: Péter Jenei
Author: Jenő Gubicza

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