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Dislocation analysis of Ti2AlN deformed at room temperature under confining pressure

Abstract : Compression experiments of the brittle MAX phase Ti 2 AlN were performed under confining gas pressure at room temperature. Subsequently, a complete dislocation analysis was performed by transmission electron microscopy. In particular, the Burgers vectors and the dislocation lines were studied via the weak beam technique: dislocation reactions are reported for the first time in a MAX phase, as well as dipole interactions. Footprints of a high lattice friction were also observed. All these features point towards classical dislocation activity, eventually leading to hardening.
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Submitted on : Friday, December 4, 2020 - 4:41:00 PM
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Antoine Guitton, Anne Joulain, Ludovic Thilly, Christophe Tromas. Dislocation analysis of Ti2AlN deformed at room temperature under confining pressure. Philosophical Magazine, Taylor & Francis, 2012, 92 (36), pp.4536-4546. ⟨10.1080/14786435.2012.715250⟩. ⟨hal-03041046⟩



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