Fast high-temperature consolidation a novel way to understand the microstructural heterogeneities in nano-reinforced ferritic steels

X. Boulnat (1, 2, 3) , D. Fabregue (2) , M. Perez (2) , S. Cazottes (2) , Y. de Carlan (1)

1 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)
2 MATEIS - Matériaux, ingénierie et science [Villeurbanne]
3 Groupe AREVA

Oxide-Dispersion Strengthened (ODS) ferritic steels were produced by powder metallurgy using a field-assisted sintering technique called spark plasma sintering (SPS). A multiscale characterization using electron microscopy combined with an in situ synchrotron X-Ray Diffraction allowed to understand the evolution of the heterogeneous microstructure. The influence of oxides precipitation was quantified by nanoscale observations to explain the microstructure heterogeneities in ferritic ODS alloys.

Mots clés: ODS; microstruture; ferritique; caractérisation fine; croissance anormale

Domaines: Physique Nucléaire Expérimentale [nucl-ex]; Physique Nucléaire Théorique [nucl-th]

X. Boulnat, D. Fabregue, M. Perez, S. Cazottes, Y. de Carlan. Fast high-temperature consolidation a novel way to understand the microstructural heterogeneities in nano-reinforced ferritic steels. ICAPP 2015 - International Congress on Advances in Nuclear Power Plants, May 2015, Nice, France. ⟨cea-02509273⟩