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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, Semen ; Rödel, Jürgen ; Simons, Hugh (2021)
Quantitative mapping of nanotwin variants in the bulk.
In: Scripta Materialia, 199
doi: 10.1016/j.scriptamat.2021.113878
Artikel, Bibliographie

Kurzbeschreibung (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 bound- ary conditions, non-destructive bulk microscopy techniques are required. Elastic strains can be mapped via X-ray diffraction with a 10 0-20 0 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 sub- volumes (70x20 0x60 0 nm 3 ) 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 struc- tural changes together with their elastic driving fields, which is the key towards controlling and engineer- ing material’s performance at nanometric scales.

Typ des Eintrags: Artikel
Erschienen: 2021
Autor(en): Schultheiß, Jan ; Porz, Lukas ; Kodumudi Venkataraman, Lalitha ; Höfling, Marion ; Yildirim, Can ; Cook, Phil ; Detlefs, Carsten ; Gorfman, Semen ; Rödel, Jürgen ; Simons, Hugh
Art des Eintrags: Bibliographie
Titel: Quantitative mapping of nanotwin variants in the bulk
Sprache: Englisch
Publikationsjahr: 29 März 2021
Verlag: Elsevier Science Publishing
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Scripta Materialia
Jahrgang/Volume einer Zeitschrift: 199
DOI: 10.1016/j.scriptamat.2021.113878
URL / URN: https://www.sciencedirect.com/science/article/pii/S135964622...
Kurzbeschreibung (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 bound- ary conditions, non-destructive bulk microscopy techniques are required. Elastic strains can be mapped via X-ray diffraction with a 10 0-20 0 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 sub- volumes (70x20 0x60 0 nm 3 ) 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 struc- tural changes together with their elastic driving fields, which is the key towards controlling and engineer- ing material’s performance at nanometric scales.

Freie Schlagworte: Twinning X-ray diffraction, Domains, Ferroelectricity, Elasto-morphological coupling
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe
Hinterlegungsdatum: 31 Mär 2021 05:59
Letzte Änderung: 31 Mär 2021 05:59
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