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Quantitative mapping of nanotwin variants in the bulk

Schultheiß, Jan ; Porz, Lukas ; Kodumudi Venkataraman, Lalitha ; Höfling, Marion ; Yildirim, Can ; Cook, Phil ; Detlefs, Carsten ; Gorfman, Semën ; Rödel, Jürgen ; Simons, Hugh (2023):
Quantitative mapping of nanotwin variants in the bulk. (Publisher's Version)
In: Scripta Materialia, 199, Elsevier, ISSN 1359-6462, e-ISSN 1872-8456,
DOI: 10.26083/tuprints-00023202,
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Item Type: Article
Origin: Secondary publication service
Status: Publisher's Version
Title: Quantitative mapping of nanotwin variants in the bulk
Language: English
Abstract:

Crystallographic twins are critical to the properties of numerous materials from magnesium alloys to piezoelectrics. Since the onset of the twin formation is highly sensitive to the triaxial mechanical boundary conditions, non-destructive bulk microscopy techniques are required. Elastic strains can be mapped via X-ray diffraction with a 100-200 nm resolution. However, the interplay of strains with nanotwins cannot be characterized. Here, a method based on dark-field X-ray microscopy to quantify the density of nanotwin variants with twin lamellae of sizes as small as several tens of nanometers in embedded subvolumes (70x200x600 nm³) in millimeter-sized samples is introduced. The methodology is corroborated by correlating the local density of twin variants to the long-ranging strain fields for a high-performance piezoelectric material. The method facilitates direct, in situ mapping and quantification of nanoscale structural changes together with their elastic driving fields, which is the key towards controlling and engineering material's performance at nanometric scales.

Journal or Publication Title: Scripta Materialia
Volume of the journal: 199
Place of Publication: Darmstadt
Publisher: Elsevier
Collation: 5 Seiten
Uncontrolled Keywords: Twinning, X-ray diffraction, Domains, Ferroelectricity, Elasto-morphological coupling
Classification DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
500 Naturwissenschaften und Mathematik > 540 Chemie
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Date Deposited: 10 Feb 2023 09:24
Last Modified: 25 May 2023 06:10
DOI: 10.26083/tuprints-00023202
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-232029
Identification Number: 113878
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/23202
PPN: 507931165
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