Kang, Sangjun ; Wang, Di ; Caron, Arnaud ; Minnert, Christian ; Durst, Karsten ; Kübel, Christian ; Mu, Xiaoke (2023)
Direct Observation of Quadrupolar Strain Fields forming a Shear Band in Metallic Glasses.
In: Advanced Materials, 2023, 35 (25)
doi: 10.26083/tuprints-00024301
Artikel, Zweitveröffentlichung, Verlagsversion
Kurzbeschreibung (Abstract)
For decades, scanning/transmission electron microscopy (S/TEM) techniques have been employed to analyze shear bands in metallic glasses and understand their formation in order to improve the mechanical properties of metallic glasses. However, due to a lack of direct information in reciprocal space, conventional S/TEM cannot characterize the local strain and atomic structure of amorphous materials, which are key to describe the deformation of glasses. For this work, 4‐dimensional‐STEM (4D‐STEM) is applied to map and directly correlate the local strain and the atomic structure at the nanometer scale in deformed metallic glasses. Residual strain fields are observed with quadrupolar symmetry concentrated at dilated Eshelby inclusions. The strain fields percolate in a vortex‐like manner building up the shear band. This provides a new understanding of the formation of shear bands in metallic glass.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Kang, Sangjun ; Wang, Di ; Caron, Arnaud ; Minnert, Christian ; Durst, Karsten ; Kübel, Christian ; Mu, Xiaoke |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Direct Observation of Quadrupolar Strain Fields forming a Shear Band in Metallic Glasses |
| Sprache: | Englisch |
| Publikationsjahr: | 2023 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2023 |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Advanced Materials |
| Jahrgang/Volume einer Zeitschrift: | 35 |
| (Heft-)Nummer: | 25 |
| Kollation: | 9 Seiten |
| DOI: | 10.26083/tuprints-00024301 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/24301 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | For decades, scanning/transmission electron microscopy (S/TEM) techniques have been employed to analyze shear bands in metallic glasses and understand their formation in order to improve the mechanical properties of metallic glasses. However, due to a lack of direct information in reciprocal space, conventional S/TEM cannot characterize the local strain and atomic structure of amorphous materials, which are key to describe the deformation of glasses. For this work, 4‐dimensional‐STEM (4D‐STEM) is applied to map and directly correlate the local strain and the atomic structure at the nanometer scale in deformed metallic glasses. Residual strain fields are observed with quadrupolar symmetry concentrated at dilated Eshelby inclusions. The strain fields percolate in a vortex‐like manner building up the shear band. This provides a new understanding of the formation of shear bands in metallic glass. |
| Freie Schlagworte: | 4D‐STEM, Eshelby inclusions, metallic glass, shear bands, strain fields |
| ID-Nummer: | 2212086 |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-243019 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau 600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Gemeinschaftslabor Nanomaterialien 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physikalische Metallkunde |
| Hinterlegungsdatum: | 07 Aug 2023 08:08 |
| Letzte Änderung: | 09 Aug 2023 11:33 |
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