Impact of intragranular substructure parameters on the forming limit diagrams of single-phase B.C.C. steels
Article dans une revue avec comité de lecture
Date
2013Journal
MaterialsAbstract
An advanced elastic-plastic self-consistent polycrystalline model, accounting for intragranular microstructure development and evolution, is coupled with a bifurcation-based localization criterion and applied to the numerical investigation of the impact of microstructural patterns on ductility of single-phase steels. The proposed multiscale model, taking into account essential microstructural aspects, such as initial and induced textures, dislocation densities, and softening mechanisms, allows us to emphasize the relationship between intragranular microstructure of B.C.C. steels and their ductility. A qualitative study in terms of forming limit diagrams for various dislocation networks, during monotonic loading tests, is conducted in order to analyze the impact of intragranular substructure parameters on the formability of single-phase B.C.C. steels.
Files in this item
- Name:
- LEM3_MAT_2013_ABEDMERAIM
- Size:
- 1.223Mb
- Format:
- Description:
- Article-Materials-Franz-et-al-2013
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureFRANZ, Gérald; BEN ZINEB, Tarak; LEMOINE, Xavier; BERVEILLER, Marcel; ABED-MERAIM, Farid (Elsevier, 2011)In this paper, the effects of microstructure and deformation mechanisms on the ductility of multiphase steels are investigated. To this end, a formability criterion based on loss of ellipticity of the boundary value problem ...
-
Communication avec acteFRANZ, Gérald; BEN ZINEB, Tarak; LEMOINE, Xavier; BERVEILLER, Marcel; ABED-MERAIM, Farid (Curran Associates, Inc. / ICF, 2009)In order to investigate the impact of microstructures and deformation mechanisms on the ductility of materials, the criterion based on bifurcation theory first proposed by Rice is applied to elastic-plastic tangent moduli ...
-
Communication avec acteLa striction et la rupture au cours de l’opération d’emboutissage figurent parmi les principaux phénomènes limitant les déformations maximales admises par les métaux. Ces phénomènes sont liés à la microstructure des matériaux ...
-
Communication sans acteThe development of a relevant constitutive model adapted to sheet metal forming simulations requires an accurate description of the most important sources of anisotropy, i.e. the slip processes, the intragranular substructure ...
-
Communication avec acteFRANZ, Gérald; BEN ZINEB, Tarak; LEMOINE, Xavier; BERVEILLER, Marcel; ABED-MERAIM, Farid (American Institute of Physics, 2007)A microstructural model, based on Peeters' works, is implemented into a large strain self-consistent scheme, leading to the multiscale model which achieves, for each grain, the calculation of slip activity, with help of ...