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Titel
Revealing anelasticity and structural rearrangements in nanoscale metallic glass films usingin situTEM diffraction
Autor*in
Rohit Sarkar
Department of Materials Science and Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
Autor*in
Ehsan Izadi
Department of Mechanical and Aerospace Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
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Abstract
We used a novel diffraction-based method to extract the local, atomic-level elastic strain in nanoscale amorphous TiAl films during in situ transmission electron microscopy deformation, while simultaneously measuring the macroscopic strain. The complementary strain measurements revealed significant anelastic deformation, which was independently confirmed by strain rate experiments. Furthermore, the distribution of first nearest-neighbor distances became narrower during loading and permanent changes were observed in the atomic structure upon unloading, even in the absence of macroscopic plasticity. The results demonstrate the capability of in situ electron diffraction to probe structural rearrangements and decouple elastic and anelastic deformation in metallic glasses.
Objekt-Typ
Sprache
Englisch [eng]
Stichwort
Metallic glassatomic rearrangementslocal elastic strainin situ electron diffractionstrain rate experiments
Erscheinungsdatum
2016
Seitenanfang
135
Seitenende
143
Erschienen in
Titel
Materials Research Letters
Band
5
Ausgabe
3
Verlag
Informa UK Limited
Projektnummer
I 1309 – Austrian Science Fund (FWF)
Persistent identifier
https://phaidra.univie.ac.at/o:705763
Zugänglichkeit
Rechteangabe
© 2016 The Author(s).

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