TY  - JOUR
AU  - Heggen, Marc
AU  - Feuerbacher, Michael
AU  - Dunin-Borkowski, Rafal E.
TI  - Direct observation of dislocation motion in the complex alloy T-Al-Mn-Fe using in-situ transmission electron microscopy
JO  - Materials Research Letters
VL  - 11
IS  - 5
SN  - 2166-3831
CY  - London [u.a.]
PB  - Taylor & Francis
M1  - FZJ-2023-00013
SP  - 367 - 373
PY  - 2023
AB  - Metadislocations are novel defects recently identified in complex metallic alloys. It was reasoned that their propagation necessarily requires the orchestrated motion of hundreds of atoms along various crystallographic directions per elementary step. Here, we report on the direct observation of the motion of metadislocations on the atomic scale in the complex metallic alloy phase T-Al-Mn-Fe, using in-situ high-resolution transmission electron microscopy. We observe their propagation by discrete jumps between low-energy configurations. Using a tiling model, we determine their characteristic features including the Burgers vector, and identify their motion to take place in a mixed glide/climb process.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000899504400001
DO  - DOI:10.1080/21663831.2022.2155492
UR  - https://juser.fz-juelich.de/record/916661
ER  -