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Synthesis of hybrid nanocrystalline alloys by mechanical bonding through high-pressure torsion

Synthesis of hybrid nanocrystalline alloys by mechanical bonding through high-pressure torsion
Synthesis of hybrid nanocrystalline alloys by mechanical bonding through high-pressure torsion
This review provides an overview of the mechanical bonding of dissimilar bulk engineering metals through high-pressure torsion (HPT) processing at room temperature. A recently developed procedure of mechanical bonding involves the application of conventional HPT processing to alternately stacked two or more disks of dissimilar metals. A macro-scale microstructural evolution involves the concept of making tribomaterials and, for some dissimilar metal combinations, micro-scale microstructural changes demonstrate the synthesis of metal matrix nanocomposites (MMNCs) through the nucleation of nano-scale intermetallic compounds within the nanostructured metal matrix. Further straining by HPT during the mechanical bonding provides an opportunity to introduce limited amorphous phases and a bulk metastable state. The mechanically-bonded nanostructured hybrid alloys exhibit exceptionally high specific strength and an enhanced plasticity. These experimental findings suggest a potential for using mechanical bonding for simply and expeditiously fabricating a wide range of new alloy systems by HPT processing.
grain refinement, hardness, high-pressure torsion, mechanical bonding, mechanical properties
1438-1656
Han, Jae-Kyung
226cace6-ffa5-49a4-a5af-7b6620adbf9f
Herndon, Taylor
12f92c7e-099f-40b7-8f0b-ae0e3b1dd542
Jang, Jae Il
7dc02f15-31e3-4c42-a7e3-2ac1f4edca76
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Han, Jae-Kyung
226cace6-ffa5-49a4-a5af-7b6620adbf9f
Herndon, Taylor
12f92c7e-099f-40b7-8f0b-ae0e3b1dd542
Jang, Jae Il
7dc02f15-31e3-4c42-a7e3-2ac1f4edca76
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d

Han, Jae-Kyung, Herndon, Taylor, Jang, Jae Il, Langdon, Terence G. and Kawasaki, Megumi (2019) Synthesis of hybrid nanocrystalline alloys by mechanical bonding through high-pressure torsion. Advanced Engineering Materials, [1901289]. (doi:10.1002/adem.201901289).

Record type: Review

Abstract

This review provides an overview of the mechanical bonding of dissimilar bulk engineering metals through high-pressure torsion (HPT) processing at room temperature. A recently developed procedure of mechanical bonding involves the application of conventional HPT processing to alternately stacked two or more disks of dissimilar metals. A macro-scale microstructural evolution involves the concept of making tribomaterials and, for some dissimilar metal combinations, micro-scale microstructural changes demonstrate the synthesis of metal matrix nanocomposites (MMNCs) through the nucleation of nano-scale intermetallic compounds within the nanostructured metal matrix. Further straining by HPT during the mechanical bonding provides an opportunity to introduce limited amorphous phases and a bulk metastable state. The mechanically-bonded nanostructured hybrid alloys exhibit exceptionally high specific strength and an enhanced plasticity. These experimental findings suggest a potential for using mechanical bonding for simply and expeditiously fabricating a wide range of new alloy systems by HPT processing.

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More information

Accepted/In Press date: 5 December 2019
e-pub ahead of print date: 12 December 2019
Keywords: grain refinement, hardness, high-pressure torsion, mechanical bonding, mechanical properties

Identifiers

Local EPrints ID: 436694
URI: http://eprints.soton.ac.uk/id/eprint/436694
ISSN: 1438-1656
PURE UUID: fc32f288-e8fd-4c8e-bec2-cfef5c496a5d
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 20 Dec 2019 18:31
Last modified: 26 Nov 2021 07:15

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Contributors

Author: Jae-Kyung Han
Author: Taylor Herndon
Author: Jae Il Jang
Author: Megumi Kawasaki

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