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Thesis
Home   /   Post Doctorat   /   Description of the evolution of grain size and dislocation density during ODS steels consolidation

Description of the evolution of grain size and dislocation density during ODS steels consolidation

Engineering sciences Materials and applications

Abstract

Steels reinforced with a dispersion of nanometric oxides (generally referred to as ODS steels) are currently considered especially as potential material for combustible cladding for 4th generation reactors. Up to now, these materials are conventionally produced by powder metallurgy. The evolution of the microstructure during processing is not well described, yet. Recent work in the laboratory has focused on the evolution of nano-precipitation during processing. The objective of the post-doctoral work is therefore to refine the description of this evolution, more precisely with regard to the grain size and the density of dislocations. This subject combines an experimental approach, through analyses in electron microscopy and X-ray diffraction, and a numerical approach, aiming to define an optimized method for the treatment of the evolution of dislocations.

Laboratory

Département des Matériaux pour le Nucléaire
Service des Recherches Métallurgiques Appliquées
Laboratoire d’Analyse Microstructurale des Matériaux
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