Revealing the strain-hardening behavior of twinning-induced plasticity steels: Theory, simulations, experiments

David R. Steinmetz, Tom Jäpel, Burkhard Wietbrock, Philip Eisenlohr, Ivan Gutierrez-Urrutia, Alireza Saeed-Akbari, Tilmann Hickel, Franz Roters, Dierk Raabe

Research output: Research - peer-reviewArticle

  • 146 Citations

Abstract

We present a multiscale dislocation density-based constitutive model for the strain-hardening behavior in twinning-induced plasticity (TWIP) steels. The approach is a physics-based strain rate- and temperature-sensitive model which reflects microstructural investigations of twins and dislocation structures in TWIP steels. One distinct advantage of the approach is that the model parameters, some of which are derived by ab initio predictions, are physics-based and known within an order of magnitude. This allows more complex microstructural information to be included in the model without losing the ability to identify reasonable initial values and bounds for all parameters. Dislocation cells, grain size and twin volume fraction evolution are included. Particular attention is placed on the mechanism by which new deformation twins are nucleated, and a new formulation for the critical twinning stress is presented. Various temperatures were included in the parameter optimization process. Dissipative heating is also considered. The use of physically justified parameters enables the identification of a universal parameter set for the example of an Fe-22Mn-0.6C TWIP steel.

LanguageEnglish (US)
Pages494-510
Number of pages17
JournalActa Materialia
Volume61
Issue number2
DOIs
StatePublished - Jan 2013
Externally publishedYes

Profile

Steel
Twinning
Strain hardening
Plasticity
Experiments
Physics
Temperature
Constitutive models
Dislocations (crystals)
Strain rate
Volume fraction
Heating

Keywords

  • Constitutive modeling
  • Strain hardening
  • Twinning
  • TWIP steels

ASJC Scopus subject areas

  • Ceramics and Composites
  • Metals and Alloys
  • Polymers and Plastics
  • Electronic, Optical and Magnetic Materials

Cite this

Steinmetz, D. R., Jäpel, T., Wietbrock, B., Eisenlohr, P., Gutierrez-Urrutia, I., Saeed-Akbari, A., ... Raabe, D. (2013). Revealing the strain-hardening behavior of twinning-induced plasticity steels: Theory, simulations, experiments. Acta Materialia, 61(2), 494-510. DOI: 10.1016/j.actamat.2012.09.064

Revealing the strain-hardening behavior of twinning-induced plasticity steels : Theory, simulations, experiments. / Steinmetz, David R.; Jäpel, Tom; Wietbrock, Burkhard; Eisenlohr, Philip; Gutierrez-Urrutia, Ivan; Saeed-Akbari, Alireza; Hickel, Tilmann; Roters, Franz; Raabe, Dierk.

In: Acta Materialia, Vol. 61, No. 2, 01.2013, p. 494-510.

Research output: Research - peer-reviewArticle

Steinmetz, DR, Jäpel, T, Wietbrock, B, Eisenlohr, P, Gutierrez-Urrutia, I, Saeed-Akbari, A, Hickel, T, Roters, F & Raabe, D 2013, 'Revealing the strain-hardening behavior of twinning-induced plasticity steels: Theory, simulations, experiments' Acta Materialia, vol 61, no. 2, pp. 494-510. DOI: 10.1016/j.actamat.2012.09.064
Steinmetz DR, Jäpel T, Wietbrock B, Eisenlohr P, Gutierrez-Urrutia I, Saeed-Akbari A et al. Revealing the strain-hardening behavior of twinning-induced plasticity steels: Theory, simulations, experiments. Acta Materialia. 2013 Jan;61(2):494-510. Available from, DOI: 10.1016/j.actamat.2012.09.064
Steinmetz, David R. ; Jäpel, Tom ; Wietbrock, Burkhard ; Eisenlohr, Philip ; Gutierrez-Urrutia, Ivan ; Saeed-Akbari, Alireza ; Hickel, Tilmann ; Roters, Franz ; Raabe, Dierk. / Revealing the strain-hardening behavior of twinning-induced plasticity steels : Theory, simulations, experiments. In: Acta Materialia. 2013 ; Vol. 61, No. 2. pp. 494-510
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