The University of Southampton
University of Southampton Institutional Repository

Synthesis of a bulk nanostructured metastable Al alloy with extreme supersaturation of Mg

Synthesis of a bulk nanostructured metastable Al alloy with extreme supersaturation of Mg
Synthesis of a bulk nanostructured metastable Al alloy with extreme supersaturation of Mg
Nanostructuring of bulk metals is now well documented with the development of severe plastic deformation (SPD) for improving the physical and mechanical properties of engineering materials. Processing by high-pressure torsion (HPT), which was developed initially as a grain refinement technique, was extended recently to the mechanical bonding of dissimilar metals during nanostrcturing which generally involves significant microstructural heterogeneity. Here we introduce, for the first time, a bulk metastable Al-Mg supersaturated solid solution by the diffusion bonding of separate Al and Mg metal solids at room temperature using HPT. Exceptional hardness was achieved homogeneously throughout the metastable alloy with a record maximum supersaturated Mg content of ~38.5 at.% in the Al matrix having a grain size of ~35-40 nm. Our results demonstrate the synthesis of a bulk nanocrystalline metastable alloy with good microstructural stability at room temperature where such bulk solids are not yet reported for mechanical alloying by powder metallurgy.
synthesis, bulk nanostructured metals and alloys, metastable, Al alloy, extreme supersaturation, Mg
2045-2322
1-7
Han, Jae-Kyung
226cace6-ffa5-49a4-a5af-7b6620adbf9f
Liss, Klaus-Dieter
436269cc-551c-4ef2-bed6-1a8b78a94545
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Han, Jae-Kyung
226cace6-ffa5-49a4-a5af-7b6620adbf9f
Liss, Klaus-Dieter
436269cc-551c-4ef2-bed6-1a8b78a94545
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d

Han, Jae-Kyung, Liss, Klaus-Dieter, Langdon, Terence G. and Kawasaki, Megumi (2019) Synthesis of a bulk nanostructured metastable Al alloy with extreme supersaturation of Mg. Scientific Reports, 9, 1-7, [17186]. (doi:10.1038/s41598-019-53614-3).

Record type: Article

Abstract

Nanostructuring of bulk metals is now well documented with the development of severe plastic deformation (SPD) for improving the physical and mechanical properties of engineering materials. Processing by high-pressure torsion (HPT), which was developed initially as a grain refinement technique, was extended recently to the mechanical bonding of dissimilar metals during nanostrcturing which generally involves significant microstructural heterogeneity. Here we introduce, for the first time, a bulk metastable Al-Mg supersaturated solid solution by the diffusion bonding of separate Al and Mg metal solids at room temperature using HPT. Exceptional hardness was achieved homogeneously throughout the metastable alloy with a record maximum supersaturated Mg content of ~38.5 at.% in the Al matrix having a grain size of ~35-40 nm. Our results demonstrate the synthesis of a bulk nanocrystalline metastable alloy with good microstructural stability at room temperature where such bulk solids are not yet reported for mechanical alloying by powder metallurgy.

Text
MK-SciReprts-2019 - Author's Original
Download (1MB)
Text
s41598-019-53614-3 - Version of Record
Available under License Creative Commons Attribution.
Download (1MB)

More information

Accepted/In Press date: 4 November 2019
e-pub ahead of print date: 20 November 2019
Published date: 2019
Keywords: synthesis, bulk nanostructured metals and alloys, metastable, Al alloy, extreme supersaturation, Mg

Identifiers

Local EPrints ID: 435778
URI: http://eprints.soton.ac.uk/id/eprint/435778
ISSN: 2045-2322
PURE UUID: 90262da7-2c06-44c6-af50-9e0a51093981
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 20 Nov 2019 17:30
Last modified: 17 Mar 2024 02:55

Export record

Altmetrics

Contributors

Author: Jae-Kyung Han
Author: Klaus-Dieter Liss
Author: Megumi Kawasaki

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.

×