Approximant-based orientation determination of quasicrystals using electron backscatter diffraction

Grzegorz Cios, Gert Nolze, Aimo Winkelmann, Tomasz Tokarski, Ralf Hielscher, Radoslaw Strzałka, Ireneusz Bugański, Janusz Wolny, Piotr Bała

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Abstract

Orientation mapping of quasicrystalline materials is demonstrated using crystalline approximant structures in the technique of electron backscatter diffraction (EBSD). The approximant-based orientations are symmetrised according to the rotational point group of the quasicrystal, including the visualization of orientation maps using proper colour keys for quasicrystal symmetries. Alternatively, approximant-based orientation data can also be treated using pseudosymmetry post-processing options in the EBSD system software, which enables basic grain size estimations. Approximant-based orientation analyses are demonstrated for icosahedral and decagonal quasicrystals.

Original languageEnglish
Article number113093
Number of pages10
JournalUltramicroscopy
Volume218
Early online date14 Aug 2020
DOIs
Publication statusPublished - 30 Nov 2020

Keywords

  • approximant
  • crystal orientation
  • data processing,
  • EBSD
  • quasicrystal

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