Suivi par diffraction des hétérogénéités de déformation dans un acier duplex

Ch. Le Bourlot , Olivier Castelnau , Brigitte Bacroix , Damien Faurie , J. Petit

To validate mean- and full-field micromechanical models, we have performed elastic strain measurements using several diffraction techniques (neutrons,transmission and reflexion under synchrotron radiation, and laboratory X-ray) during which the specimen was tensile deformed in-situ. Application has been performed on a duplex steel (ferrite and austenite) as an example of two-phase high-strength polycrystals. The uncertainty and relevance of the different measurements will be discussed and compared with simulations based on an elasto-viscoplastic self-consistent model.

Domaines: Mécanique [physics]

Ch. Le Bourlot, Olivier Castelnau, Brigitte Bacroix, Damien Faurie, J. Petit. Suivi par diffraction des hétérogénéités de déformation dans un acier duplex. CFM 2011 - 20ème Congrès Français de Mécanique, Aug 2011, Besançon, France. ⟨hal-03422699⟩