Influence of strain reversals during high pressure torsion process on strengthening in Al-Cu-Mg (-Li) alloy
Influence of strain reversals during high pressure torsion process on strengthening in Al-Cu-Mg (-Li) alloy
The strengthening of Al?Cu?Mg(?Li) alloys subjected to high pressure torsion (HPT) deformation with strain reversals was studied by microhardness (Hv) tests and differential scanning calorimetry (DSC). It was found that the strengthening is lower for both cyclic HPT (c-HPT) and single reversal HPT (sr-HPT) as compared to monotonic HPT (m-HPT). The DSC results demonstrate that |HPT influences S phase precipitation. With increasing strain, the maximum heat flow (height of the S peak) and the heat content of S formation peaks increases. There is a larger S heat content reaction in the periphery of HPT processed disks compared with those in the centre. Strain reversal also has a significant influence on the S precipitation. The strengthening during HPT deformation is discussed in terms of the density of statistically stored and geometrically necessary dislocations.
809-814
Zhang, Jiu When
e35e790b-1633-482f-bd9e-363ea06ef8da
Starink, Marco J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Gao, Nong
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Zhou, Wen Long
c10efec7-3c71-4453-a0fd-cc2d50160a9d
December 2010
Zhang, Jiu When
e35e790b-1633-482f-bd9e-363ea06ef8da
Starink, Marco J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Gao, Nong
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Zhou, Wen Long
c10efec7-3c71-4453-a0fd-cc2d50160a9d
Zhang, Jiu When, Starink, Marco J., Gao, Nong and Zhou, Wen Long
(2010)
Influence of strain reversals during high pressure torsion process on strengthening in Al-Cu-Mg (-Li) alloy.
Materials Science Forum, 667-669, .
(doi:10.4028/www.scientific.net/MSF.667-669.809).
Abstract
The strengthening of Al?Cu?Mg(?Li) alloys subjected to high pressure torsion (HPT) deformation with strain reversals was studied by microhardness (Hv) tests and differential scanning calorimetry (DSC). It was found that the strengthening is lower for both cyclic HPT (c-HPT) and single reversal HPT (sr-HPT) as compared to monotonic HPT (m-HPT). The DSC results demonstrate that |HPT influences S phase precipitation. With increasing strain, the maximum heat flow (height of the S peak) and the heat content of S formation peaks increases. There is a larger S heat content reaction in the periphery of HPT processed disks compared with those in the centre. Strain reversal also has a significant influence on the S precipitation. The strengthening during HPT deformation is discussed in terms of the density of statistically stored and geometrically necessary dislocations.
This record has no associated files available for download.
More information
Published date: December 2010
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 170221
URI: http://eprints.soton.ac.uk/id/eprint/170221
ISSN: 1662-9752
PURE UUID: 83b3fbea-94d3-4d85-a138-fcc8ba9f0582
Catalogue record
Date deposited: 04 Jan 2011 14:31
Last modified: 14 Mar 2024 02:45
Export record
Altmetrics
Contributors
Author:
Jiu When Zhang
Author:
Wen Long Zhou
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
