1PPRIME - Institut Pprime (Institut PPRIME : Recherche et Ingénierie en Matériaux, Mécanique et Energétique
SP2MI Téléport 2
Boulevard Pierre et Marie Curie
BP 30179
86962 FUTUROSCOPE CEDEX - France)
Université de Poitiers : UPR3346 (15, rue de l'Hôtel Dieu - 86034 Poitiers Cedex - France)
Abstract : Ti2AlN nanolayered ternary alloy has been plastically deformed under confining pressure at 900 degrees C. The dislocation configurations of the deformed material have been analyzed by transmission electron microscopy. The results show a drastic evolution compared to the dislocation configurations observed in the Ti2AlN samples deformed at room temperature. In particular, they evidence out-of-basal-plane dislocations and interactions. Moreover numerous cross-slip events from basal plane to prismatic or pyramidal planes are observed. These original results are discussed in the context of the Brittle-to-Ductile Transition of the nanolayered ternary alloys.
https://hal.univ-lorraine.fr/hal-01503720
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Submitted on : Friday, December 4, 2020 - 7:46:53 AM Last modification on : Saturday, December 5, 2020 - 3:24:48 AM
Antoine Guitton, Anne Joulain, Ludovic Thilly, Christophe Tromas. Evidence of dislocation cross-slip in MAX phase deformed at high temperature. Scientific Reports, Nature Publishing Group, 2014, 4, ⟨10.1038/srep06358⟩. ⟨hal-01503720⟩