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The effect of deformation twinning on stress localization in a three dimensional TWIP steel microstructure

Tari,V, Rollett,AD, Kadiri,HE, Beladi,H, Oppedal,AL and King,RL 2015, The effect of deformation twinning on stress localization in a three dimensional TWIP steel microstructure, Modelling and Simulation in Materials Science and Engineering, vol. 23, no. 4, doi: 10.1088/0965-0393/23/4/045010.

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Title The effect of deformation twinning on stress localization in a three dimensional TWIP steel microstructure
Author(s) Tari,V
Rollett,AD
Kadiri,HE
Beladi,H
Oppedal,AL
King,RL
Journal name Modelling and Simulation in Materials Science and Engineering
Volume number 23
Issue number 4
Publisher Institute of Physics Publishing
Publication date 2015-06
ISSN 0965-0393
1361-651X
Keyword(s) electron backscatter diffraction
twinning
TWIP steel
viscoplastic
Science & Technology
Technology
Physical Sciences
Materials Science, Multidisciplinary
Physics, Applied
Materials Science
Physics
INDUCED-PLASTICITY STEEL
STACKING-FAULT ENERGY
TEXTURE EVOLUTION
ORIENTATION DEPENDENCE
FCC METALS
GRAIN-SIZE
STRAIN
SLIP
POLYCRYSTALS
CRYSTALS
Summary We present an investigation of the effect of deformation twinning on the visco-plastic response and stress localization in a low stacking fault energy twinning-induced plasticity (TWIP) steel under uniaxial tension loading. The three-dimensional full field response was simulated using the fast Fourier transform method. The initial microstructure was obtained from a three dimensional serial sectionusing electron backscatter diffraction. Twin volume fraction evolution upon strain was measured so the hardening parameters of the simple Voce model could be identified to fit both the stress-strain behavior and twinning activity. General trends of texture evolution were acceptably predicted including the typical sharpening and balance between the 1 1 1 fiber and the 1 0 0 fiber. Twinning was found to nucleate preferentially at grain boundaries although the predominant twin reorientation scheme did not allow spatial propagation to be captured. Hot spots in stress correlated with the boundaries of twinned voxel domains, which either impeded or enhanced twinning based on which deformation modes were active locally.
Language eng
DOI 10.1088/0965-0393/23/4/045010
Field of Research 091299 Materials Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Institute of Physics Publishing
Persistent URL http://hdl.handle.net/10536/DRO/DU:30074026

Document type: Journal Article
Collection: Institute for Frontier Materials
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Created: Wed, 24 Jun 2015, 08:57:26 EST

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