Effect of hydriding induced defects on the small-scale plasticity mechanisms in nanocrystalline palladium thin films

Lumbeeck, Gunnar; Idrissi, Hosni; Amin-Ahmadi, Behnam; Favache, Audrey; Delmelle, Renaud; Samaee, Vahid; Proost, Joris; Pardoen, Thomas; Schryvers, Dominique

doi:10.1063/1.5055274

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Effect of hydriding induced defects on the small-scale plasticity mechanisms in nanocrystalline palladium thin films
Authors:	Lumbeeck, Gunnar Idrissi, Hosni Amin-Ahmadi, Behnam Favache, Audrey Delmelle, Renaud Samaee, Vahid Proost, Joris Pardoen, Thomas Schryvers, Dominique
et. al:	No
DOI:	10.1063/1.5055274
Published in:	Journal of Applied Physics
Volume(Issue):	124
Issue:	22
Page(s):	225105
Issue Date:	14-Dec-2018
Publisher / Ed. Institution:	American Institute of Physics
ISSN:	0021-8979 1089-7550
Language:	English
Subjects:	Hydrogen reaction; Nanomaterial; Thin film; Nano-indentation; Plasticity; Deformation; Crystal orientation; Crystallographic defect
Subject (DDC):	620: Engineering
Abstract:	Nanoindentation tests performed on nanocrystalline palladium films subjected to hydriding/dehydriding cycles demonstrate a significant softening when compared to the as-received material. The origin of this softening is unraveled by combining in situ TEM nanomechanical testing with automated crystal orientation mapping in TEM and high resolution TEM. The softening is attributed to the presence of a high density of stacking faults and of Shockley partial dislocations after hydrogen loading. The hydrogen induced defects affect the elementary plasticity mechanisms and the mechanical response by acting as preferential sites for twinning/detwinning during deformation. These results are analyzed and compared to previous experimental and simulation works in the literature. This study provides new insights into the effect of hydrogen on the atomistic deformation and cracking mechanisms as well as on the mechanical properties of nanocrystalline thin films and membranes.
URI:	https://repository.uantwerpen.be/docman/irua/d58e24/155742.pdf https://digitalcollection.zhaw.ch/handle/11475/29145
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Engineering
Appears in collections:	Publikationen School of Engineering

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Lumbeeck, G., Idrissi, H., Amin-Ahmadi, B., Favache, A., Delmelle, R., Samaee, V., Proost, J., Pardoen, T., & Schryvers, D. (2018). Effect of hydriding induced defects on the small-scale plasticity mechanisms in nanocrystalline palladium thin films. Journal of Applied Physics, 124(22), 225105. https://doi.org/10.1063/1.5055274

Lumbeeck, G. et al. (2018) ‘Effect of hydriding induced defects on the small-scale plasticity mechanisms in nanocrystalline palladium thin films’, Journal of Applied Physics, 124(22), p. 225105. Available at: https://doi.org/10.1063/1.5055274.

G. Lumbeeck et al., “Effect of hydriding induced defects on the small-scale plasticity mechanisms in nanocrystalline palladium thin films,” Journal of Applied Physics, vol. 124, no. 22, p. 225105, Dec. 2018, doi: 10.1063/1.5055274.

LUMBEECK, Gunnar, Hosni IDRISSI, Behnam AMIN-AHMADI, Audrey FAVACHE, Renaud DELMELLE, Vahid SAMAEE, Joris PROOST, Thomas PARDOEN und Dominique SCHRYVERS, 2018. Effect of hydriding induced defects on the small-scale plasticity mechanisms in nanocrystalline palladium thin films. Journal of Applied Physics [online]. 14 Dezember 2018. Bd. 124, Nr. 22, S. 225105. DOI 10.1063/1.5055274. Verfügbar unter: https://repository.uantwerpen.be/docman/irua/d58e24/155742.pdf

Lumbeeck, Gunnar, Hosni Idrissi, Behnam Amin-Ahmadi, Audrey Favache, Renaud Delmelle, Vahid Samaee, Joris Proost, Thomas Pardoen, and Dominique Schryvers. 2018. “Effect of Hydriding Induced Defects on the Small-Scale Plasticity Mechanisms in Nanocrystalline Palladium Thin Films.” Journal of Applied Physics 124 (22): 225105. https://doi.org/10.1063/1.5055274.

Lumbeeck, Gunnar, et al. “Effect of Hydriding Induced Defects on the Small-Scale Plasticity Mechanisms in Nanocrystalline Palladium Thin Films.” Journal of Applied Physics, vol. 124, no. 22, Dec. 2018, p. 225105, https://doi.org/10.1063/1.5055274.