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@ARTICLE{Song:1032346,
author = {Song, Hengxu and Nguyen, Binh Duong and Govind, Kishan and
Berta, Dénes and Ispánovity, Péter Dusán and Legros,
Marc and Sandfeld, Stefan},
title = {{E}nabling quantitative analysis of in situ {TEM}
experiments: {A} high-throughput, deep learning-based
approach tailored to the dynamics of dislocations},
journal = {Acta materialia},
volume = {282},
issn = {1359-6454},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2024-06168},
pages = {120455 -},
year = {2025},
abstract = {In situ TEM is by far the most commonly used microscopy
method for imaging dislocations, i.e., line-like defects in
crystalline materials. However, quantitative image analysis
so far was not possible, implying that also statistical
analyses were strongly limited. In this work, we created a
deep learning-based digital twin of an in situ TEM straining
experiment, additionally allowing to perform matching
simulations. As application we extract spatio-temporal
information of moving dislocations from experiments carried
out on a Cantor high entropy alloy and investigate the
universality class of plastic strain avalanches. We can
directly observe “stick–slip motion” of single
dislocations and compute the corresponding avalanche
statistics. The distributions turn out to be scale-free, and
the exponent of the power law distribution exhibits
independence on the driving stress. The introduced
methodology is entirely generic and has the potential to
turn meso-scale TEM microscopy into a truly quantitative and
reproducible approach.},
cin = {IAS-9},
ddc = {670},
cid = {I:(DE-Juel1)IAS-9-20201008},
pnm = {5111 - Domain-Specific Simulation $\&$ Data Life Cycle Labs
(SDLs) and Research Groups (POF4-511)},
pid = {G:(DE-HGF)POF4-5111},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001349894500001},
doi = {10.1016/j.actamat.2024.120455},
url = {https://juser.fz-juelich.de/record/1032346},
}