Direct observation of dislocation formation and plastic anisotropy in Nb2AlC MAX phase using in situ nanomechanics in transmission electron microscopy

Journal article
(Original article)


Publication Details

Author(s): Kabiri Y, Schrenker N, Müller J, Mackovic M, Spiecker E
Journal: Scripta Materialia
Publication year: 2017
Volume: 137
Pages range: 104-108
ISSN: 1359-6462
Language: English


Abstract


We report on the direct observation of nucleation and propagation of basal plane dislocations in Nb2AlC, a member of MAX phases, using nanomechanical testing inside a transmission electron microscope. Different loading directions with respect to the basal plane resulted in completely different plastic response due to the pronounced anisotropy of the layered crystal. Discrete dislocation activities were correlated to distinct events in the force-displacement curves. In situ observations together with post-mortem contrast analyses of deformed regions show no indication of cross-slip or entanglement of dislocations during the indentations.



FAU Authors / FAU Editors

Kabiri, Yoones
Professur für Werkstoffwissenschaften (Elektronenmikroskopie)
Mackovic, Mirza Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)
Schrenker, Nadine
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)
Spiecker, Erdmann Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)


Additional Organisation
Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden
Exzellenz-Cluster Engineering of Advanced Materials


How to cite

APA:
Kabiri, Y., Schrenker, N., Müller, J., Mackovic, M., & Spiecker, E. (2017). Direct observation of dislocation formation and plastic anisotropy in Nb2AlC MAX phase using in situ nanomechanics in transmission electron microscopy. Scripta Materialia, 137, 104-108. https://dx.doi.org/10.1016/j.scriptamat.2017.04.015

MLA:
Kabiri, Yoones, et al. "Direct observation of dislocation formation and plastic anisotropy in Nb2AlC MAX phase using in situ nanomechanics in transmission electron microscopy." Scripta Materialia 137 (2017): 104-108.

BibTeX: 

Last updated on 2018-19-04 at 04:00