Effect of stacking fault energy on steady-state creep rate of face centred cubic metals
Effect of stacking fault energy on steady-state creep rate of face centred cubic metals
Continuum elastic theory was used to establish the relationships between the force of interaction required to constrict dislocation partials, energy of constriction and climb velocity of the constricted thermal jogs, in order to examine the effect of stacking fault energy (SFE) on steady state creep rate of face centered cubic (FCC) metals. Values of the SFE exponent calculated for FCC metals ranged between 3.1 and 3.8; with a mean of 3.4, which was close to the accepted semi-empirical SFE exponent of 3.0; thereby confirming the suitability of the theory. The corresponding stress exponent obtained from the analysis was 5.0, which satisfied the condition that the stress exponent must be greater than 4.5 for pure FCC metals.
71-77
Ayensu, A.
1be9ed64-e392-4686-be40-3f9ae1c5bf7d
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Owusu, A.
5b712155-6b96-4d0f-9b26-cc958d7c44bc
Akuffo-Kumi, K
1181038b-acbf-4fb0-9592-6c37c0640db5
2014
Ayensu, A.
1be9ed64-e392-4686-be40-3f9ae1c5bf7d
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Owusu, A.
5b712155-6b96-4d0f-9b26-cc958d7c44bc
Akuffo-Kumi, K
1181038b-acbf-4fb0-9592-6c37c0640db5
Ayensu, A., Langdon, T.G., Owusu, A. and Akuffo-Kumi, K
(2014)
Effect of stacking fault energy on steady-state creep rate of face centred cubic metals.
Journal of Applied Science and Technology, 19 (1-2), .
Abstract
Continuum elastic theory was used to establish the relationships between the force of interaction required to constrict dislocation partials, energy of constriction and climb velocity of the constricted thermal jogs, in order to examine the effect of stacking fault energy (SFE) on steady state creep rate of face centered cubic (FCC) metals. Values of the SFE exponent calculated for FCC metals ranged between 3.1 and 3.8; with a mean of 3.4, which was close to the accepted semi-empirical SFE exponent of 3.0; thereby confirming the suitability of the theory. The corresponding stress exponent obtained from the analysis was 5.0, which satisfied the condition that the stress exponent must be greater than 4.5 for pure FCC metals.
This record has no associated files available for download.
More information
Published date: 2014
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 372292
URI: http://eprints.soton.ac.uk/id/eprint/372292
ISSN: 0855-2215
PURE UUID: 755ab082-ea2e-48d2-b211-b141c360f122
Catalogue record
Date deposited: 09 Dec 2014 15:28
Last modified: 12 Dec 2021 03:19
Export record
Contributors
Author:
A. Ayensu
Author:
A. Owusu
Author:
K Akuffo-Kumi
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
