Cargando…

Evidence of dislocation cross-slip in MAX phase deformed at high temperature

Ti(2)AlN nanolayered ternary alloy has been plastically deformed under confining pressure at 900°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...

Descripción completa

Detalles Bibliográficos
Autores principales: Guitton, Antoine, Joulain, Anne, Thilly, Ludovic, Tromas, Christophe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4163670/
https://www.ncbi.nlm.nih.gov/pubmed/25220949
http://dx.doi.org/10.1038/srep06358
Descripción
Sumario:Ti(2)AlN nanolayered ternary alloy has been plastically deformed under confining pressure at 900°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 Ti(2)AlN 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.