Microstructural characterization of a composite Mo reinforced by 25 at.% TiC

Denis Cédat (1) , C. Rey (1) , Michel Clavel (1) , Jean-Hubert Schmitt (1) , M. Le Flem (2) , Alexandre Allemand

1 MSSMat - Laboratoire de mécanique des sols, structures et matériaux
2 SRMA - Service des Recherches Métallurgiques Appliquées

In the scope of cermet development for structural pieces of future nuclear reactors (1000-1650 degrees C), Mo-TiC(25at.%) was processed by hot isostatic pressure (HIP) and characterized in term of microstructure and chemical composition. The fabrication resulted in a three-phase material so called core/shell microstructure. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses, both coupled with X-ray detection (EDX), allowed to highlight the formation of TiC-Mo(15at.%) phase at the TiC/Mo interface, in agreement with the phase diagram. The formation mechanisms of this phase are discussed. (C) 2009 Elsevier B.V. All rights reserved.

Domains: Physics [physics]; Mechanics [physics]; Mechanics of materials [physics.class-ph]; Engineering Sciences [physics]; Mechanics [physics.med-ph]; Mechanics of materials [physics.class-ph]

Denis Cédat, C. Rey, Michel Clavel, Jean-Hubert Schmitt, M. Le Flem, et al.. Microstructural characterization of a composite Mo reinforced by 25 at.% TiC. Journal of Nuclear Materials, 2009, 385 (3), pp.533-537. ⟨10.1016/j.jnucmat.2008.12.047⟩. ⟨hal-00751968⟩