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Hardness development of mechanically-bonded hybrid nanostructured alloys through high-pressure torsion

Hardness development of mechanically-bonded hybrid nanostructured alloys through high-pressure torsion
Hardness development of mechanically-bonded hybrid nanostructured alloys through high-pressure torsion

Processing through the application of high-pressure torsion (HPT) provides significant grain refinement in bulk metals at room temperature. These ultrafine-grained (UFG) materials after HPT generally demonstrate exceptional mechanical properties. Recent reports demonstrated the bulk-state reactions for mechanical bonding of dissimilar lightweight metal disks to synthesize hybrid alloy systems by utilizing conventional HPT processing. Accordingly, the present report provides a comprehensive summary of the recent work on processing of several UFG hybrid alloy systems including Al-Mg and Al-Cu by HPT under 6.0 GPa at room temperature and a special emphasis was placed on understanding the evolution of hardness. This study demonstrates a significant opportunity for the application of HPT for a possible contribution to current enhancements in diffusion bonding, welding and mechanical joining technologies as well as to an introduction of hybrid engineering nanomaterials.

Hardness, High-pressure torsion, Intermetallic compounds, Mechanical bonding, Metal-matrix composite
1662-9752
177-182
Kawasaki, Megumi
e72a45f7-304f-410f-ac1e-55145d4923a5
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Kawasaki, Megumi
e72a45f7-304f-410f-ac1e-55145d4923a5
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Kawasaki, Megumi and Langdon, Terence G (2021) Hardness development of mechanically-bonded hybrid nanostructured alloys through high-pressure torsion. Materials Science Forum, 1016, 177-182. (doi:10.4028/www.scientific.net/MSF.1016.177).

Record type: Article

Abstract

Processing through the application of high-pressure torsion (HPT) provides significant grain refinement in bulk metals at room temperature. These ultrafine-grained (UFG) materials after HPT generally demonstrate exceptional mechanical properties. Recent reports demonstrated the bulk-state reactions for mechanical bonding of dissimilar lightweight metal disks to synthesize hybrid alloy systems by utilizing conventional HPT processing. Accordingly, the present report provides a comprehensive summary of the recent work on processing of several UFG hybrid alloy systems including Al-Mg and Al-Cu by HPT under 6.0 GPa at room temperature and a special emphasis was placed on understanding the evolution of hardness. This study demonstrates a significant opportunity for the application of HPT for a possible contribution to current enhancements in diffusion bonding, welding and mechanical joining technologies as well as to an introduction of hybrid engineering nanomaterials.

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Megumi-THERMEC2020 - Accepted Manuscript
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Accepted/In Press date: 14 May 2020
Published date: January 2021
Additional Information: Funding Information: This work was supported by the National Science Foundation of the United States under Grant No. DMR-1810343 (MK) and the European Research Council under ERC Grant Agreement No. 267464-SPDMETALS (TGL). Publisher Copyright: © 2021 Trans Tech Publications Ltd, Switzerland.
Keywords: Hardness, High-pressure torsion, Intermetallic compounds, Mechanical bonding, Metal-matrix composite

Identifiers

Local EPrints ID: 445665
URI: http://eprints.soton.ac.uk/id/eprint/445665
ISSN: 1662-9752
PURE UUID: c6b62ce0-6e12-4a4c-9921-55029044d028
ORCID for Terence G Langdon: ORCID iD orcid.org/0000-0003-3541-9250

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Date deposited: 05 Jan 2021 17:34
Last modified: 06 Jun 2024 01:40

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Author: Megumi Kawasaki

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