Impact of Intragranular Substructure Parameters on the Forming Limit Diagrams of Single-Phase B.C.C. Steels

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 si...

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Bibliographic Details
Published in:Materials 2013-11, Vol.6 (11), p.5217-5233
Main Authors: Franz, Gérald, Abed-Meraim, Farid, Berveiller, Marcel
Format: Article
Language:English
Subjects:
Anisotropy
Chemical Sciences
Ductility
Engineering Sciences
Investigations
Localization
Material chemistry
Mechanical engineering
Mechanics
Mechanics of materials
Metal forming
Physics
Single crystals
Solid mechanics
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Summary: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.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma6115217