A constitutive model of the deformation behaviour of twinning induced plasticity (TWIP) steel at different temperatures

Shterner,V, Molotnikov,A, Timokhina,I, Estrin,Y and Beladi,H 2014, A constitutive model of the deformation behaviour of twinning induced plasticity (TWIP) steel at different temperatures, Materials Science and Engineering A, vol. 613, pp. 224-231, doi: 10.1016/j.msea.2014.06.073.

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Title A constitutive model of the deformation behaviour of twinning induced plasticity (TWIP) steel at different temperatures
Author(s) Shterner,V
Timokhina,IORCID iD for Timokhina,I orcid.org/0000-0003-1989-0835
Beladi,HORCID iD for Beladi,H orcid.org/0000-0003-0131-707X
Journal name Materials Science and Engineering A
Volume number 613
Start page 224
End page 231
Total pages 8
Publisher Elsevier
Place of publication Amsterdam , Netherlands
Publication date 2014-09-08
ISSN 0921-5093
Keyword(s) Constitutive modelling
Deformation twinning
Stacking fault energy (SFE)
Twinning induced plasticity (TWIP) steels
Science & Technology
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Science & Technology - Other Topics
Materials Science
Summary The mechanical behaviour of Fe-18Mn-0.6C-1Al (wt%) TWIP steel was modelled in the temperature range from room temperature to 400°C. The proposed constitutive model was based on the Kocks-Mecking-Estrin (KME) model. The model parameters were determined using extensive experimental measurements of the physical parameters such as the dislocation mean free path and the volume fraction of twinned grains. More than 100 grains with a total area of ~300μm2 were examined at different strain levels over the entire stress-strain curve. Uniaxial tensile deformation of the TWIP steel was modelled for different deformation temperatures using a modelling approach which considers two distinct populations of grains: twinned and twin-free ones. A key point of the work was a meticulous experimental determination of the evolution of the volume fraction of twinned grains during uniaxial tensile deformation. This information was implemented in a phase-mixture model that yielded a very good agreement with the experimental tensile behaviour for the tested range of deformation temperatures. © 2014 Elsevier B.V.
Language eng
DOI 10.1016/j.msea.2014.06.073
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 ©2014, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30069221

Document type: Journal Article
Collections: Institute for Frontier Materials
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