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Materials 2013, 6(11), 5217-5233; doi:10.3390/ma6115217

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

1
Laboratoire des Technologies Innovantes (LTI), EA 3899—IUT Amiens, Avenue des Facultés—Le Bailly, Amiens Cedex 1 F-80025, France
2
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), UMR CNRS 7239—Arts et Métiers ParisTech, 4 rue Augustin Fresnel, Metz Cedex 3 F-57078, France
3
Laboratory of Excellence on Design of Alloy Metals for low-mAss Structures (DAMAS), University of Lorraine, Ile du Saulcy, Metz Cedex 1 F-57045, France
*
Author to whom correspondence should be addressed.
Received: 29 August 2013 / Revised: 21 October 2013 / Accepted: 29 October 2013 / Published: 13 November 2013
(This article belongs to the Special Issue Computational Modeling and Simulation in Materials Study)
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Abstract

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. View Full-Text
Keywords: forming limit diagrams; bifurcation analysis; intragranular substructure; multiscale model; crystal plasticity; B.C.C. materials forming limit diagrams; bifurcation analysis; intragranular substructure; multiscale model; crystal plasticity; B.C.C. materials
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Franz, G.; Abed-Meraim, F.; Berveiller, M. Impact of Intragranular Substructure Parameters on the Forming Limit Diagrams of Single-Phase B.C.C. Steels. Materials 2013, 6, 5217-5233.

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