A constitutive model for high strain rate deformation in FCC metals based on irreversible thermodynamics
A constitutive model for high strain rate deformation in FCC metals based on irreversible thermodynamics
The present work extends a recent model for plastic deformation of polycrystalline metals based on irreversible thermodynamics. A general dislocation evolution equation is derived for a wide range of strain rates. It is found that there is a transitional strain rate (∼103 s-1) over which the phonon drag effects play a dominant role in dislocation generation resulting in a significant raise in the dislocation density and flow stress. The model reduces to the classical Kocks-Mecking model at low strain rates.
982-988
Huang, Mingxin
51ed1877-648a-47c1-81a7-f345f7270908
Rivera-Díaz-del-Castillo, Pedro E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
Bouaziz, Olivier
4db4de8c-1a14-4180-91e1-f602311f0727
van der Zwaag, Sybrand
ad11f134-8a43-4635-9feb-7c3d01158f4b
September 2009
Huang, Mingxin
51ed1877-648a-47c1-81a7-f345f7270908
Rivera-Díaz-del-Castillo, Pedro E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
Bouaziz, Olivier
4db4de8c-1a14-4180-91e1-f602311f0727
van der Zwaag, Sybrand
ad11f134-8a43-4635-9feb-7c3d01158f4b
Huang, Mingxin, Rivera-Díaz-del-Castillo, Pedro E.J., Bouaziz, Olivier and van der Zwaag, Sybrand
(2009)
A constitutive model for high strain rate deformation in FCC metals based on irreversible thermodynamics.
Mechanics of Materials, 41 (9), .
(doi:10.1016/j.mechmat.2009.05.007).
Abstract
The present work extends a recent model for plastic deformation of polycrystalline metals based on irreversible thermodynamics. A general dislocation evolution equation is derived for a wide range of strain rates. It is found that there is a transitional strain rate (∼103 s-1) over which the phonon drag effects play a dominant role in dislocation generation resulting in a significant raise in the dislocation density and flow stress. The model reduces to the classical Kocks-Mecking model at low strain rates.
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e-pub ahead of print date: 9 June 2009
Published date: September 2009
Identifiers
Local EPrints ID: 492811
URI: http://eprints.soton.ac.uk/id/eprint/492811
ISSN: 0167-6636
PURE UUID: 9cc91dde-e8aa-4821-bc2e-a3dada8c14d7
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Date deposited: 14 Aug 2024 17:02
Last modified: 15 Aug 2024 02:20
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Contributors
Author:
Mingxin Huang
Author:
Pedro E.J. Rivera-Díaz-del-Castillo
Author:
Olivier Bouaziz
Author:
Sybrand van der Zwaag
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