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Modeling of elasto-viscoplastic behaviour of steels at high temperatures
Charles, J. F.; Habraken, Anne; Lecomte-Beckers, Jacqueline
1998In Huetink; Baajens (Eds.) Proceedings of Simulation of Materials Processing, Methods and Applications. Esaform
Peer reviewed
 

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Keywords :
Modelling; elasto-viscoplastic; behaviour of steels; high temperatures; LiMaRC - Liège Materials Research Center
Abstract :
[en] Hot compression tests at constant strain rate and temperature allow to reach stress-strain curves. These experimental data are then used to calibrate a Norton Hoff elastoviscoplastic model (Gavrus & Massoni 1995). The implementation of this model (Habraken et al. 1997) in the large strain non linear finite element code LAGAMINE is summarised in this paper. Then finite element thermo-mechanical analysis of previous compression tests and independant ones are performed to validate the produced material constitutive model. These simulations give the stress, strain rate and temperature fields of the sample, necessary to predict recrystallisation phenomena. A summary of the recrystallisation models proposed by the literature as well as the simple one implemented in the LAGAMINA code will be presented. So experimental, numerical and metallographic studies of hot compression tests aim the definition of an accurate predictive thermo-mechanic metallurgical model able to simulate forging processes.
Disciplines :
Materials science & engineering
Author, co-author :
Charles, J. F.
Habraken, Anne  ;  Université de Liège - ULiège > Département ArGEnCo > Département ArGEnCo
Lecomte-Beckers, Jacqueline ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Science des matériaux métalliques
Language :
English
Title :
Modeling of elasto-viscoplastic behaviour of steels at high temperatures
Publication date :
1998
Event name :
Conference on Metal Forming
Audience :
International
Main work title :
Proceedings of Simulation of Materials Processing, Methods and Applications. Esaform
Author, co-author :
Baajens
Editor :
Huetink
Publisher :
Balkema, Rotterdam, Netherlands
ISBN/EAN :
905410970X
Pages :
57-60
Peer reviewed :
Peer reviewed
Available on ORBi :
since 05 December 2009

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