Publication
Title
Effect of hydriding induced defects on the small-scale plasticity mechanisms in nanocrystalline palladium thin films
Author
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.
Language
English
Source (journal)
Journal of applied physics / American Institute of Physics. - New York, N.Y., 1937, currens
Journal of applied physics / American Institute of Physics. - New York, N.Y., 1937, currens
Publication
New York, N.Y. : American Institute of Physics , 2018
ISSN
0021-8979 [print]
1089-7550 [online]
Volume/pages
124 :22 (2018) , 6 p.
Article Reference
225105
ISI
000453254000025
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Project info
Study of the fundamental mechanisms of nano-plasticity in asdeposited and hydrided nanocrystalline Pd thin films using highthroughput nanostatistical in-situ nanomechanical TEM testing.
Mechanical properties and chemical bonding at the interfaces in polymer-based composite materials (InterPoCo).
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 18.12.2018
Last edited 20.09.2021
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