EBSD orientation analysis based on experimental Kikuchi reference patterns

Aimo Winkelmann, Grzegorz Cios, Tomasz Tokarski, Gert Nolze, Ralf Hielscher, Tomasz Kozieł

Research output: Contribution to journalArticle

Abstract

Orientation determination does not necessarily require complete knowledge of the local atomic arrangement in a crystalline phase. We present a method for microstructural phase discrimination and orientation analysis of phases for which there is only limited crystallographic information available. In this method, experimental Kikuchi diffraction patterns are utilized to generate a self-consistent master reference for use in the technique of Electron Backscatter Diffraction (EBSD). The experimentally derived master data serves as an application-specific reference in EBSD pattern matching approaches. As application examples, we map the locally varying orientations in samples of icosahedral quasicrystals observed in a Ti40Zr40Ni20 alloy, and we analyse AlNiCo decagonal quasicrystals.

Original languageEnglish
Pages (from-to)376-385
Number of pages10
JournalActa Materialia
Volume188
Early online date11 Feb 2020
DOIs
Publication statusPublished - 15 Apr 2020

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Keywords

  • crystal orientation
  • EBSD
  • pattern matching
  • quasicrystal

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