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
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Item Type: | Article |
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Type of entry: | Secondary publication |
Title: | Direct Observation of Quadrupolar Strain Fields forming a Shear Band in Metallic Glasses |
Language: | English |
Date: | 7 August 2023 |
Place of Publication: | Darmstadt |
Year of primary publication: | 2023 |
Publisher: | Wiley-VCH |
Journal or Publication Title: | Advanced Materials |
Volume of the journal: | 35 |
Issue Number: | 25 |
Collation: | 9 Seiten |
DOI: | 10.26083/tuprints-00024301 |
Corresponding Links: | |
Origin: | Secondary publication DeepGreen |
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. |
Uncontrolled Keywords: | 4D‐STEM, Eshelby inclusions, metallic glass, shear bands, strain fields |
Identification Number: | 2212086 |
Status: | Publisher's Version |
URN: | urn:nbn:de:tuda-tuprints-243019 |
Classification DDC: | 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering 600 Technology, medicine, applied sciences > 660 Chemical engineering |
Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Joint Research Laboratory Nanomaterials 11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy |
Date Deposited: | 07 Aug 2023 08:08 |
Last Modified: | 17 Oct 2023 07:53 |
SWORD Depositor: | Deep Green |
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/24301 |
PPN: | 512229368 |
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