The University of Southampton
University of Southampton Institutional Repository
Warning ePrints Soton is experiencing an issue with some file downloads not being available. We are working hard to fix this. Please bear with us.

Developing magnesium-based composites through high-pressure torsion

Developing magnesium-based composites through high-pressure torsion
Developing magnesium-based composites through high-pressure torsion
Magnesium and its alloys display interesting properties such as low density and biocompatibility but the lack of ductility and low strength compromise their performance in many applications. Fabrication of metal matrix composites may alleviate these challenges and improve overall performance. Magnesium matrix composites can be produced by cold consolidation of particles through high-pressure torsion and this paper summarizes recent findings in processing routes for the fabrication of composites, the microstructure developed, mechanical properties obtained and potential applications. It is shown that ductile materials can be mixed with magnesium by processing half samples placed side by side and hard and brittle materials can be incorporated by processing mixed particles. The distribution of phases may be controlled by the amount of rotation imposed during processing. Well-dispersed second phase particles within a continuous magnesium matrix can be obtained. Thus, it is possible to incorporate bioactive materials within a biodegradable magnesium matrix. Detailed characterization using transmission electron microscopy reveals the processing also refines the grain structure of the metallic matrix. The composites may display good ductility, improved strength and an ability to precipitate intermetallics through thermal treatment. The composites produced using high-pressure torsion have different potential applications including the development of bioactive and biodegradable biological implants.
biodegradable material, composites, high-pressure torsion, HPT, magnesium, mechanical properties
2218-5046
541-545
Castro, Moara
cb6729d8-fd38-46a4-91e3-a87da53d0e99
Pereira, Pedro Henrique
f033a8a6-ddad-4f6a-91ec-521a3358e4c2
Figueiredo, Roberto
184313b8-9f00-451a-bfb1-6d80a2c89b78
Langdon, Terence
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Castro, Moara
cb6729d8-fd38-46a4-91e3-a87da53d0e99
Pereira, Pedro Henrique
f033a8a6-ddad-4f6a-91ec-521a3358e4c2
Figueiredo, Roberto
184313b8-9f00-451a-bfb1-6d80a2c89b78
Langdon, Terence
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Castro, Moara, Pereira, Pedro Henrique, Figueiredo, Roberto and Langdon, Terence (2019) Developing magnesium-based composites through high-pressure torsion. Letters on Materials, 9 (4s), 541-545. (doi:10.22226/2410-3535-2019-4-541-545).

Record type: Article

Abstract

Magnesium and its alloys display interesting properties such as low density and biocompatibility but the lack of ductility and low strength compromise their performance in many applications. Fabrication of metal matrix composites may alleviate these challenges and improve overall performance. Magnesium matrix composites can be produced by cold consolidation of particles through high-pressure torsion and this paper summarizes recent findings in processing routes for the fabrication of composites, the microstructure developed, mechanical properties obtained and potential applications. It is shown that ductile materials can be mixed with magnesium by processing half samples placed side by side and hard and brittle materials can be incorporated by processing mixed particles. The distribution of phases may be controlled by the amount of rotation imposed during processing. Well-dispersed second phase particles within a continuous magnesium matrix can be obtained. Thus, it is possible to incorporate bioactive materials within a biodegradable magnesium matrix. Detailed characterization using transmission electron microscopy reveals the processing also refines the grain structure of the metallic matrix. The composites may display good ductility, improved strength and an ability to precipitate intermetallics through thermal treatment. The composites produced using high-pressure torsion have different potential applications including the development of bioactive and biodegradable biological implants.

Text
Langdon-LoM-2019 - Accepted Manuscript
Download (6MB)

More information

Accepted/In Press date: 2 December 2019
Published date: 2019
Keywords: biodegradable material, composites, high-pressure torsion, HPT, magnesium, mechanical properties

Identifiers

Local EPrints ID: 436954
URI: http://eprints.soton.ac.uk/id/eprint/436954
ISSN: 2218-5046
PURE UUID: 4c7c5b7e-3377-491a-9ca6-272d64f20344
ORCID for Terence Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 14 Jan 2020 17:32
Last modified: 22 Nov 2021 02:48

Export record

Altmetrics

Contributors

Author: Moara Castro
Author: Pedro Henrique Pereira
Author: Roberto Figueiredo
Author: Terence Langdon ORCID iD

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.

×