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

Y Huang , Piotr Bazarnik , Diqing Wan , Dan Luo , Pedro Henrique R. Pereira , Małgorzata Lewandowska , Jin Yao , Brian E. Hayden , Terence G. Langdon

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.
Author Y Huang
Y Huang,,
-
, Piotr Bazarnik (FMSE / DMD)
Piotr Bazarnik,,
- Division of Materials Design
, Diqing Wan
Diqing Wan,,
-
, Dan Luo
Dan Luo,,
-
, Pedro Henrique R. Pereira
Pedro Henrique R. Pereira,,
-
, Małgorzata Lewandowska (FMSE / DMD)
Małgorzata Lewandowska,,
- Division of Materials Design
, Jin Yao
Jin Yao,,
-
, Brian E. Hayden
Brian E. Hayden,,
-
, Terence G. Langdon
Terence G. Langdon,,
-
Journal seriesActa Materialia, ISSN 1359-6454, (A 45 pkt)
Issue year2019
Vol164
Pages499-511
Publication size in sheets0.6
Keywords in EnglishAluminium, Graphene, High-pressure torsion, Nanocomposites, Ultrafine grains
ASJC Classification2506 Metals and Alloys; 2507 Polymers and Plastics; 2503 Ceramics and Composites; 2504 Electronic, Optical and Magnetic Materials
DOIDOI:10.1016/j.actamat.2018.10.060
Languageen angielski
File
2019 Acta Materialia Bazarnik.pdf 4.92 MB
Score (nominal)45
ScoreMinisterial score = 45.0, 08-05-2019, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2017 = 2.737; WoS Impact Factor: 2017 = 6.036 (2) - 2017=6.174 (5)
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