Investigation of microstructure of bulk Ni2MnGa alloy by means of electron backscatter diffraction analysis

A. Koblischka-Veneva, C. Gachot, P. Leibenguth, F. Mücklich

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The microstructure of bulk samples of the shape memory alloy Ni2MnGa is evaluated by means of electron backscatter diffraction (EBSD). The crystallographic orientation of individual grains can be determined with a high spatial resolution using an automated recording of Kikuchi patterns. The obtained data are presented in form of image quality (IQ) and orientation maps, pole figures and orientation distribution functions. Local EBSD maps and pole figures reveal details about the orientation of the twin structure. The twin structure is clearly resolved within the EBSD mappings; the matrix is oriented in [1 0 0] direction and there is a 90° misorientation to the neighboring twin. Furthermore, pole figures obtained by EBSD are compared to those determined by means of X-ray texture analysis. Therefore, the EBSD measurements give information not accessible to the X-ray pole figure analysis.

Original languageEnglish
Pages (from-to)e431-e434
JournalJournal of Magnetism and Magnetic Materials
Volume316
Issue number2 SPEC. ISS.
DOIs
Publication statusPublished - 2007 Sep
Externally publishedYes

Keywords

  • Electron backscatter diffraction
  • Ferromagnetic shape memory alloy
  • NiMnGa
  • Orientation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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