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Thermo-mechanically coupled model of diffusionless phase transformation in austenitic steel

Hallberg, Håkan LU ; Håkansson, Paul LU and Ristinmaa, Matti LU (2010) In International Journal of Solids and Structures 47(11-12). p.1580-1591
Abstract (Swedish)
Abstract in Undetermined

A constitutive model of thermo-mechanically coupled finite strain plasticity considering martensitic phase transformation is presented. The model is formulated within a thermodynamic framework, giving a physically sound format where the thermodynamic mechanical and chemical forces that drive the phase transformation are conveniently identifiable. The phase fraction is treated through an internal variable approach and the first law of thermodynamics allows a consistent treatment of the internal heat generation due to dissipation of inelastic work. The model is calibrated against experimental data on a Ni-Cr steel of AISi304-type, allowing illustrative simulations to be performed. It becomes clear... (More)
Abstract in Undetermined

A constitutive model of thermo-mechanically coupled finite strain plasticity considering martensitic phase transformation is presented. The model is formulated within a thermodynamic framework, giving a physically sound format where the thermodynamic mechanical and chemical forces that drive the phase transformation are conveniently identifiable. The phase fraction is treated through an internal variable approach and the first law of thermodynamics allows a consistent treatment of the internal heat generation due to dissipation of inelastic work. The model is calibrated against experimental data on a Ni-Cr steel of AISi304-type, allowing illustrative simulations to be performed. It becomes clear that the thermal effects considered in the present formulation have a significant impact on the material behavior. This is seen, not least, in the effects found on forming limit diagrams, also considered in the present paper. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Phase transformation, Thermo-mechanical processes, Finite strain plasticity, AIS1304, Forming limit diagram, FLD
in
International Journal of Solids and Structures
volume
47
issue
11-12
pages
1580 - 1591
publisher
Elsevier
external identifiers
  • wos:000277527600012
  • scopus:77950204826
ISSN
0020-7683
DOI
10.1016/j.ijsolstr.2010.02.019
language
English
LU publication?
yes
id
fbef6972-a35f-4177-aa00-caa06e2ec347 (old id 1584074)
date added to LUP
2010-04-08 09:09:28
date last changed
2018-05-29 10:59:17
@article{fbef6972-a35f-4177-aa00-caa06e2ec347,
  abstract     = {<b>Abstract in Undetermined</b><br/><br>
A constitutive model of thermo-mechanically coupled finite strain plasticity considering martensitic phase transformation is presented. The model is formulated within a thermodynamic framework, giving a physically sound format where the thermodynamic mechanical and chemical forces that drive the phase transformation are conveniently identifiable. The phase fraction is treated through an internal variable approach and the first law of thermodynamics allows a consistent treatment of the internal heat generation due to dissipation of inelastic work. The model is calibrated against experimental data on a Ni-Cr steel of AISi304-type, allowing illustrative simulations to be performed. It becomes clear that the thermal effects considered in the present formulation have a significant impact on the material behavior. This is seen, not least, in the effects found on forming limit diagrams, also considered in the present paper.},
  author       = {Hallberg, Håkan and Håkansson, Paul and Ristinmaa, Matti},
  issn         = {0020-7683},
  keyword      = {Phase transformation,Thermo-mechanical processes,Finite strain plasticity,AIS1304,Forming limit diagram,FLD},
  language     = {eng},
  number       = {11-12},
  pages        = {1580--1591},
  publisher    = {Elsevier},
  series       = {International Journal of Solids and Structures},
  title        = {Thermo-mechanically coupled model of diffusionless phase transformation in austenitic steel},
  url          = {http://dx.doi.org/10.1016/j.ijsolstr.2010.02.019},
  volume       = {47},
  year         = {2010},
}