One of the most successful models for describing the Portevin–Le Chatelier effect in engineering applications is the Kubin–Estrin–McCormick model (KEMC). In the present work, the influence of dynamic strain ageing on dynamic recovery due to dislocation annihilation is introduced in order to improve the KEMC model. This modification accounts for additional strain hardening rate due to limited dislocation annihilation by the diffusion of solute atoms and dislocation pinning at low strain rate and/or high temperature. The parameters associated with this novel formulation are identified based on tensile tests for a C–Mn steel at seven temperatures ranging from 20 °C to 350 °C. The validity of the model and the improvement compared to existing models are tested using 2D and 3D finite element simulations of the Portevin–Le Chatelier effect in tension.
Accepté le :
Publié le :
Sicong Ren 1 ; Matthieu Mazière 1 ; Samuel Forest 1 ; Thilo F. Morgeneyer 1 ; Gilles Rousselier 1
@article{CRMECA_2017__345_12_908_0, author = {Sicong Ren and Matthieu Mazi\`ere and Samuel Forest and Thilo F. Morgeneyer and Gilles Rousselier}, title = {A constitutive model accounting for strain ageing effects on work-hardening. {Application} to a {C{\textendash}Mn} steel}, journal = {Comptes Rendus. M\'ecanique}, pages = {908--921}, publisher = {Elsevier}, volume = {345}, number = {12}, year = {2017}, doi = {10.1016/j.crme.2017.09.005}, language = {en}, }
TY - JOUR AU - Sicong Ren AU - Matthieu Mazière AU - Samuel Forest AU - Thilo F. Morgeneyer AU - Gilles Rousselier TI - A constitutive model accounting for strain ageing effects on work-hardening. Application to a C–Mn steel JO - Comptes Rendus. Mécanique PY - 2017 SP - 908 EP - 921 VL - 345 IS - 12 PB - Elsevier DO - 10.1016/j.crme.2017.09.005 LA - en ID - CRMECA_2017__345_12_908_0 ER -
%0 Journal Article %A Sicong Ren %A Matthieu Mazière %A Samuel Forest %A Thilo F. Morgeneyer %A Gilles Rousselier %T A constitutive model accounting for strain ageing effects on work-hardening. Application to a C–Mn steel %J Comptes Rendus. Mécanique %D 2017 %P 908-921 %V 345 %N 12 %I Elsevier %R 10.1016/j.crme.2017.09.005 %G en %F CRMECA_2017__345_12_908_0
Sicong Ren; Matthieu Mazière; Samuel Forest; Thilo F. Morgeneyer; Gilles Rousselier. A constitutive model accounting for strain ageing effects on work-hardening. Application to a C–Mn steel. Comptes Rendus. Mécanique, Volume 345 (2017) no. 12, pp. 908-921. doi : 10.1016/j.crme.2017.09.005. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2017.09.005/
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