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Elastoplastic deformation and damage process in duplex stainless steels studied using synchrotron and neutron diffractions in comparison with a self-consistent model

Article dans une revue avec comité de lecture
Author
BACZMANSKI, Andrzej
445585 AGH University of Science and Technology [Krakow, PL] [AGH UST]
ZHAO, Yuchen
1685 Laboratoire des Systèmes Mécaniques et d'Ingénierie Simultanée [LASMIS]
4225 Duke Physics
GADALIŃSKA, E
232948 Institute of Aviation [Warsaw]
LE JONCOUR, Léa
1685 Laboratoire des Systèmes Mécaniques et d'Ingénierie Simultanée [LASMIS]
WROŃSKI, Sebastian
445585 AGH University of Science and Technology [Krakow, PL] [AGH UST]
PANICAUD, Benoît
1685 Laboratoire des Systèmes Mécaniques et d'Ingénierie Simultanée [LASMIS]
FRANÇOIS, Manuel
1685 Laboratoire des Systèmes Mécaniques et d'Ingénierie Simultanée [LASMIS]
BUSLAPS, Thomas
2568 European Synchrotron Radiation Facility [ESRF]
SOLODUCHA, K.
445585 AGH University of Science and Technology [Krakow, PL] [AGH UST]
ccBRAHAM, Chedly
14421 Laboratoire d'Ingénierie des Matériaux [LIM]
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/15917
DOI
10.1016/j.ijplas.2016.01.018
Date
2016
Journal
International Journal of Plasticity

Abstract

In situ time of flight neutron diffraction and X-ray synchrotron diffraction methods were applied to measure lattice strains in duplex steels during a tensile test. The experimental results were used to study slips on crystallographic planes and the mechanical effects of damage occurring during plastic deformation. For this purpose the prediction of an elastoplastic self-consistent model was compared with the experimental data. The used methodology allowed to determine the elastic limits and parameters describing work hardening in both phases of studied polycrystalline materials. In the second part of this work the developed elastoplastic model was applied to study damage occurring in the ferritic phase. The theoretical results showed a significant reduction of stresses localized in the damaged phase (ferrite) and confirmed the evolution of the lattice strains measured in the ferritic and austenitic phases.

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