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Experimental study and micromechanical modelling of the effective elastic properties of Fe–TiB2 composites

Article dans une revue avec comité de lecture
Author
DORHMI, Khaoula
HADJEM-HAMOUCHE, Zehoua
MORIN, Léo
75 Institut de Recherche Mathématique de Rennes [IRMAR]
BONNET, Frédéric
36484 ArcelorMittal Maizières Research SA
CHEVALIER, Jean-Pierre
ccDERRIEN, Katell
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/20576
DOI
10.1016/j.compstruct.2021.114122
Date
2021
Journal
Composite Structures

Abstract

The aim of this paper is to investigate the effective properties of Fe–TiB2 composites obtained after hot or cold rolling. The elastic moduli of both hot and cold rolled composites are measured experimentally using several methods. Microstructure analyses based on SEM observations are performed to characterize the distribution of particles and cracks, and are then used to generate 3D representative microstructures using the RSA method. This allows the numerical determination of the overall elastic behavior of Fe–TiB2 composites using full-field FFT-based simulations. In addition, Young’s moduli of the hot rolled Fe–TiB2 composites are also determined analytically using the mean-field homogenization scheme of Mori–Tanaka. The elastic properties determined experimentally, analytically and numerically are in a good agreement. Overall, a significant improvement of the specific stiffness in comparison to standard steels is achieved irrespective of the processing conditions

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