The University of Southampton
University of Southampton Institutional Repository
Warning ePrints Soton is experiencing an issue with some file downloads not being available. We are working hard to fix this. Please bear with us.

An investigation by EXAFS of local atomic structure in an Mg-Nd alloy after processing by high-pressure torsion and ageing

An investigation by EXAFS of local atomic structure in an Mg-Nd alloy after processing by high-pressure torsion and ageing
An investigation by EXAFS of local atomic structure in an Mg-Nd alloy after processing by high-pressure torsion and ageing
The local atomic structure of an Mg-1.44Nd (wt.%) alloy was investigated after solution annealing, high-pressure torsion (HPT) processing up to 1 and 10 turns and ageing at 250 °C for 5 h using X-ray absorption fine structure (XAFS) measurements at the Nd LIII-edge. The results show that HPT processing has no effect on the atomic structure around Nd atoms compared to the unprocessed state, whereas ageing at 250 °C for 5 h induces a significant modification in the coordination number and interatomic distances around the Nd atoms. These variations are analyzed based on the correlations between precipitation, defects and atomic mobility of the chemical species.
Ageing, EXAFS, Metals and alloys, Mg-Nd alloy, Phase transformation, high-pressure torsion
0167-577X
Bourezg, Yousf Islem
aab04bbc-d0f1-4ef4-8bef-2471dbbca4f0
Azzeddine, Hiba
f32633f8-2f8a-433e-9180-ada2b8704eae
Harfouche, Messaoud
cbdc2723-728b-4dbc-866f-abb306c62c93
Thiaudière, Dominique
cc8853a8-c94b-4101-aed1-b2bebc1957de
Mocuta, Cristian
14b61f9a-1352-4019-9eb7-80de69a05506
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Bradai, Djamel
554ec639-52df-4169-8044-53485b61c829
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Bourezg, Yousf Islem
aab04bbc-d0f1-4ef4-8bef-2471dbbca4f0
Azzeddine, Hiba
f32633f8-2f8a-433e-9180-ada2b8704eae
Harfouche, Messaoud
cbdc2723-728b-4dbc-866f-abb306c62c93
Thiaudière, Dominique
cc8853a8-c94b-4101-aed1-b2bebc1957de
Mocuta, Cristian
14b61f9a-1352-4019-9eb7-80de69a05506
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Bradai, Djamel
554ec639-52df-4169-8044-53485b61c829
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Bourezg, Yousf Islem, Azzeddine, Hiba, Harfouche, Messaoud, Thiaudière, Dominique, Mocuta, Cristian, Huang, Yi, Bradai, Djamel and Langdon, Terence G. (2020) An investigation by EXAFS of local atomic structure in an Mg-Nd alloy after processing by high-pressure torsion and ageing. Materials Letters, 264, [127379]. (doi:10.1016/j.matlet.2020.127379).

Record type: Article

Abstract

The local atomic structure of an Mg-1.44Nd (wt.%) alloy was investigated after solution annealing, high-pressure torsion (HPT) processing up to 1 and 10 turns and ageing at 250 °C for 5 h using X-ray absorption fine structure (XAFS) measurements at the Nd LIII-edge. The results show that HPT processing has no effect on the atomic structure around Nd atoms compared to the unprocessed state, whereas ageing at 250 °C for 5 h induces a significant modification in the coordination number and interatomic distances around the Nd atoms. These variations are analyzed based on the correlations between precipitation, defects and atomic mobility of the chemical species.

Text
Bourezg et al_revised - Accepted Manuscript
Download (941kB)

More information

Accepted/In Press date: 17 January 2020
e-pub ahead of print date: 20 January 2020
Published date: 1 April 2020
Keywords: Ageing, EXAFS, Metals and alloys, Mg-Nd alloy, Phase transformation, high-pressure torsion

Identifiers

Local EPrints ID: 437489
URI: http://eprints.soton.ac.uk/id/eprint/437489
ISSN: 0167-577X
PURE UUID: 99e5e6d2-996c-474a-bf0d-5ce9869decd9
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: 31 Jan 2020 17:36
Last modified: 26 Nov 2021 06:14

Export record

Altmetrics

Contributors

Author: Yousf Islem Bourezg
Author: Hiba Azzeddine
Author: Messaoud Harfouche
Author: Dominique Thiaudière
Author: Cristian Mocuta
Author: Yi Huang ORCID iD
Author: Djamel Bradai

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×