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Correlation between microstructure and mechanical properties of severely deformed metals

Correlation between microstructure and mechanical properties of severely deformed metals
Correlation between microstructure and mechanical properties of severely deformed metals
There is a correlation between the microstructure and the mechanical behavior of ultrafine-grained face centered cubic (fcc) metals processed by equal-channel angular pressing (ECAP). It is shown that the saturation yield strength is related to the maximum dislocation density according to the Taylor equation and, in addition, the value of the parameter ? in the Taylor equation is strongly affected by the stacking fault energy because of different geometrical arrangements of dislocations within the grains. It is also demonstrated that the ductility of Cu processed by ECAP decreases with increasing strain but at extremely high strains the ductility is partially restored due to the recovery of the microstructure
0925-8388
271-274
Gubicza, J.
4b1812c5-5905-46be-8c26-51c25ef82722
Chinh, N.Q.
75241499-642b-477a-b457-cd08bcab4b9d
Lábár, J.L.
b482d642-4837-4ac2-833e-4d74d81e0465
Dobatkin, S.
676aae40-d538-434f-a3f4-705bf812ac51
Hegedüs, Z.
47ae1209-c26d-4da6-b28b-f946d9853546
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Gubicza, J.
4b1812c5-5905-46be-8c26-51c25ef82722
Chinh, N.Q.
75241499-642b-477a-b457-cd08bcab4b9d
Lábár, J.L.
b482d642-4837-4ac2-833e-4d74d81e0465
Dobatkin, S.
676aae40-d538-434f-a3f4-705bf812ac51
Hegedüs, Z.
47ae1209-c26d-4da6-b28b-f946d9853546
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Gubicza, J., Chinh, N.Q., Lábár, J.L., Dobatkin, S., Hegedüs, Z. and Langdon, T.G. (2009) Correlation between microstructure and mechanical properties of severely deformed metals. Journal of Alloys and Compounds, 483 (1-2), 271-274. (doi:10.1016/j.jallcom.2008.07.200).

Record type: Article

Abstract

There is a correlation between the microstructure and the mechanical behavior of ultrafine-grained face centered cubic (fcc) metals processed by equal-channel angular pressing (ECAP). It is shown that the saturation yield strength is related to the maximum dislocation density according to the Taylor equation and, in addition, the value of the parameter ? in the Taylor equation is strongly affected by the stacking fault energy because of different geometrical arrangements of dislocations within the grains. It is also demonstrated that the ductility of Cu processed by ECAP decreases with increasing strain but at extremely high strains the ductility is partially restored due to the recovery of the microstructure

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More information

Published date: August 2009
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 72329
URI: https://eprints.soton.ac.uk/id/eprint/72329
ISSN: 0925-8388
PURE UUID: adc40d14-6575-4752-8f51-b6de661463bc
ORCID for T.G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 09 Feb 2010
Last modified: 19 Oct 2018 00:34

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