The University of Southampton
University of Southampton Institutional Repository

Effect of strain reversals on the processing of high-purity aluminum by high-pressure torsion

Effect of strain reversals on the processing of high-purity aluminum by high-pressure torsion
Effect of strain reversals on the processing of high-purity aluminum by high-pressure torsion
High-purity aluminum was processed by high-pressure torsion (HPT) under conventional monotonic (m-HPT) and cyclic (c-HPT) conditions where strain reversals are introduced in c-HPT during processing. Measurements show higher values of the Vickers microhardness in the center regions of all disks but these values are higher when processing by c-HPT by comparison with m-HPT for the same total number of turns. Slightly smaller grain sizes are observed in the c-HPT samples. It is shown that all of the microhardness values correlate with the estimated values of the equivalent strain and the results are consistent with earlier data reported under c-HPT conditions when it is recognized that the variation of hardness with equivalent strain is dependent upon the level of recovery within the material.
0022-2461
4583-4593
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Ahn, B.yungmin
2bcfd7bf-d8d3-4028-ae66-c8b7573931c9
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Ahn, B.yungmin
2bcfd7bf-d8d3-4028-ae66-c8b7573931c9
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Kawasaki, Megumi, Ahn, B.yungmin and Langdon, Terence G. (2010) Effect of strain reversals on the processing of high-purity aluminum by high-pressure torsion. Journal of Materials Science, 45 (17), 4583-4593. (doi:10.1007/s10853-010-4420-9).

Record type: Article

Abstract

High-purity aluminum was processed by high-pressure torsion (HPT) under conventional monotonic (m-HPT) and cyclic (c-HPT) conditions where strain reversals are introduced in c-HPT during processing. Measurements show higher values of the Vickers microhardness in the center regions of all disks but these values are higher when processing by c-HPT by comparison with m-HPT for the same total number of turns. Slightly smaller grain sizes are observed in the c-HPT samples. It is shown that all of the microhardness values correlate with the estimated values of the equivalent strain and the results are consistent with earlier data reported under c-HPT conditions when it is recognized that the variation of hardness with equivalent strain is dependent upon the level of recovery within the material.

This record has no associated files available for download.

More information

Published date: September 2010
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 170695
URI: http://eprints.soton.ac.uk/id/eprint/170695
ISSN: 0022-2461
PURE UUID: fa516b98-48bd-46b5-a5ae-84ae7380d67b
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 10 Jan 2011 12:23
Last modified: 14 Mar 2024 02:47

Export record

Altmetrics

Contributors

Author: Megumi Kawasaki
Author: B.yungmin Ahn

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.

×