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

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

doi:10.1016/j.jmmm.2007.02.171

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 journal › Article › peer-review

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 language	English
Pages (from-to)	e431-e434
Journal	Journal of Magnetism and Magnetic Materials
Volume	316
Issue number	2 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jmmm.2007.02.171
Publication status	Published - 2007 Sept
Externally published	Yes

Keywords

Electron backscatter diffraction
Ferromagnetic shape memory alloy
NiMnGa
Orientation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2007.02.171

Cite this

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title = "Investigation of microstructure of bulk Ni2MnGa alloy by means of electron backscatter diffraction analysis",

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.",

keywords = "Electron backscatter diffraction, Ferromagnetic shape memory alloy, NiMnGa, Orientation",

author = "A. Koblischka-Veneva and C. Gachot and P. Leibenguth and F. M{\"u}cklich",

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T1 - Investigation of microstructure of bulk Ni2MnGa alloy by means of electron backscatter diffraction analysis

AU - Koblischka-Veneva, A.

AU - Gachot, C.

AU - Leibenguth, P.

AU - Mücklich, F.

PY - 2007/9

Y1 - 2007/9

N2 - 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.

AB - 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.

KW - Electron backscatter diffraction

KW - Ferromagnetic shape memory alloy

KW - NiMnGa

KW - Orientation

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