Description of microstructural intragranular heterogeneities in a Ti-IF steel using a micromechanical approach
- Laboratoire des Proprietes Mecaniques et Thermodynamiques des Materiaux, Universite Paris Nord, avenue Jean-Baptiste Clement, 93430 Villetaneuse (France)
- Arcelor Research, Voie romaine - BP30320, 57283 Maizieres-les-Metz and Laboratoire des Proprietes Mecaniques et Thermodynamiques des Materiaux, Universite Paris Nord, avenue Jean-Baptiste Clement, 93430 Villetaneuse (France)
A classical problem in metallurgical research is to control the recrystallisation texture which forms during the last annealing process and which determine the mechanical behaviour of the final products. It is now widely admitted that the local deformed state and the substructural heterogeneities within the polycrystal are key parameters to understand the recrystallisation mechanisms.In this work, we present a micromechanical approach based on the use of the affine extension of the self-consistent scheme for viscoplastic behaviours and a phenomenological description of dislocation patterning using a hardening model recently developed for two-stage strain paths. These two ingredients allow to compare the model with experimental crystallographic texture after rolling as well as experimental observations of the intragranular substructure using orientation imaging by Electron Back-Scattered Diffaction. It is shown that the rolling texture is correctly simulated and successful predictions of the orientation of dislocation sheets are obtained.
- OSTI ID:
- 21056966
- Journal Information:
- AIP Conference Proceedings, Vol. 907, Issue 1; Conference: 10. ESAFORM conference on material forming, Zaragoza (Spain), 18-20 Apr 2007; Other Information: DOI: 10.1063/1.2729497; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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