Quantitative mapping of nanotwin variants in the bulk
| Autor: | Phil Cook, Hugh Simons, Jürgen Rödel, Lukas Porz, Marion Höfling, Can Yildirim, Semën Gorfman, Jan Schultheiß, Carsten Detlefs, Lalitha Kodumudi Venkataraman |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: |
In situ
Diffraction Materials science Twinning Ferroelectricity 02 engineering and technology 01 natural sciences 0103 physical sciences Microscopy Elasto-morphological coupling General Materials Science Boundary value problem Nanoscopic scale 010302 applied physics Mechanical Engineering Resolution (electron density) Metals and Alloys 021001 nanoscience & nanotechnology Condensed Matter Physics Piezoelectricity X-ray diffraction Mechanics of Materials Chemical physics Domains Nanometre 0210 nano-technology |
| Zdroj: | Schultheiß, J, Porz, L, Kodumudi Venkataraman, L, Höfling, M, Yildirim, C, Cook, P, Detlefs, C, Gorfman, S, Rödel, J & Simons, H 2021, ' Quantitative mapping of nanotwin variants in the bulk ', Scripta Materialia, vol. 199, 113878 . https://doi.org/10.1016/j.scriptamat.2021.113878 Scripta Materialia 'Scripta Materialia ', vol: 199, pages: 113878-1-113878-5 (2021) |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2021.113878 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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