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The fabrication of graphene-reinforced Al-based nanocomposites using high-pressure torsion

The fabrication of graphene-reinforced Al-based nanocomposites using high-pressure torsion
The fabrication of graphene-reinforced Al-based nanocomposites using high-pressure torsion
Metal matrix nanocomposites were fabricated by high-pressure torsion (HPT) using 5% graphene nanoplates as a reinforcement contained within an Al matrix. Powders were mixed and compacted at room temperature and then processed by HPT at three different temperatures of 298, 373 and 473 K. After processing, microstructural observations were undertaken to reveal the distributions of graphene in the matrix, the grain refinement in the aluminium and the nature of the graphene-aluminium interfaces. Tests were performed to measure the microhardness, the tensile stress-strain curves and the electrical conductivity. The results show that processing by HPT is advantageous because it avoids the sintering and high temperature deformation associated with other processing routes.
aluminium, graphene, high-pressure torsion, nanocomposites, ultrafine grains
1359-6454
499-511
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Bazarnik, Piotr
7612d50d-0cfc-43b1-a48f-f5062caacc1e
Wan, Diqing
fea3351c-01fc-4d12-968a-ff6e65fd3f53
Luo, Dan
dec1cf45-3c2f-4d24-bb22-c0047c59fee9
Rodrigues Pereira, Pedro, Henrique
9ee129fd-0e06-482d-990c-971aaf83b1d0
Lewandowska, Małgorzata
a5f45b21-9af9-4dac-a0c0-5005c1431a02
Yao, Jin
83dff1cd-6f7c-4b47-968e-18c64ffcb24b
Hayden, Brian
aea74f68-2264-4487-9d84-5b12ddbbb331
Langdon, Terence
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Bazarnik, Piotr
7612d50d-0cfc-43b1-a48f-f5062caacc1e
Wan, Diqing
fea3351c-01fc-4d12-968a-ff6e65fd3f53
Luo, Dan
dec1cf45-3c2f-4d24-bb22-c0047c59fee9
Rodrigues Pereira, Pedro, Henrique
9ee129fd-0e06-482d-990c-971aaf83b1d0
Lewandowska, Małgorzata
a5f45b21-9af9-4dac-a0c0-5005c1431a02
Yao, Jin
83dff1cd-6f7c-4b47-968e-18c64ffcb24b
Hayden, Brian
aea74f68-2264-4487-9d84-5b12ddbbb331
Langdon, Terence
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Huang, Yi, Bazarnik, Piotr, Wan, Diqing, Luo, Dan, Rodrigues Pereira, Pedro, Henrique, Lewandowska, Małgorzata, Yao, Jin, Hayden, Brian and Langdon, Terence (2019) The fabrication of graphene-reinforced Al-based nanocomposites using high-pressure torsion. Acta Materialia, 164, 499-511. (doi:10.1016/j.actamat.2018.10.060).

Record type: Article

Abstract

Metal matrix nanocomposites were fabricated by high-pressure torsion (HPT) using 5% graphene nanoplates as a reinforcement contained within an Al matrix. Powders were mixed and compacted at room temperature and then processed by HPT at three different temperatures of 298, 373 and 473 K. After processing, microstructural observations were undertaken to reveal the distributions of graphene in the matrix, the grain refinement in the aluminium and the nature of the graphene-aluminium interfaces. Tests were performed to measure the microhardness, the tensile stress-strain curves and the electrical conductivity. The results show that processing by HPT is advantageous because it avoids the sintering and high temperature deformation associated with other processing routes.

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YH Acta final - Accepted Manuscript
Restricted to Repository staff only until 1 November 2019.
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Accepted/In Press date: 29 October 2018
e-pub ahead of print date: 1 November 2018
Published date: 1 February 2019
Keywords: aluminium, graphene, high-pressure torsion, nanocomposites, ultrafine grains

Identifiers

Local EPrints ID: 425747
URI: https://eprints.soton.ac.uk/id/eprint/425747
ISSN: 1359-6454
PURE UUID: 8ed7e6bb-09ca-4d62-b979-2f354174d5cb
ORCID for Yi Huang: ORCID iD orcid.org/0000-0001-9259-8123
ORCID for Brian Hayden: ORCID iD orcid.org/0000-0002-7762-1812
ORCID for Terence Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 02 Nov 2018 17:30
Last modified: 14 Mar 2019 01:55

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Contributors

Author: Yi Huang ORCID iD
Author: Piotr Bazarnik
Author: Diqing Wan
Author: Dan Luo
Author: Pedro, Henrique Rodrigues Pereira
Author: Małgorzata Lewandowska
Author: Jin Yao
Author: Brian Hayden ORCID iD
Author: Terence Langdon ORCID iD

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