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A Quantitative Texture Analysis of Pluri-Crystals by Texture Goniometry

Published online by Cambridge University Press:  06 March 2019

A. Vadon,
J. J. Heizmann and
C. Laruelle
A. Vadon
Affiliation:
Laboratoire de Métallurgie Structurale, Faculté des Sciences, Ile du Saulcy 57045, Metz Cedex 1, France
J. J. Heizmann
Affiliation:
Laboratoire de Métallurgie Structurale, Faculté des Sciences, Ile du Saulcy 57045, Metz Cedex 1, France
C. Laruelle
Affiliation:
Laboratoire de Métallurgie Structurale, Faculté des Sciences, Ile du Saulcy 57045, Metz Cedex 1, France
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Extract

To understand how a material evolves - its crystal growth, topotaxy, twinning, phase transformation, plastic deformation, microstress, etc. - it is important to know the crystal orientations, either between them or in respect to the sample.

The crystal texture of the material is quantified by the Orientation Distribution Function (O.D.F.). This function represents the part of the material volume having a given orientation. To compute this O.D.F, we must first measure one or several complete or incomplete pole figures and then analyse them either with Roe-Bunge's harmonic method or with Vadon, Ruer, Baro's vector method. In the case of a very sharp texture, the results obtained with the harmonic method are not good because developing a DIRAC function in spherical harmonics requires a high rank, hence a large number of pole figures. On the contrary, with the vector method, the results are good since discretizing amounts to developing on a step-function basis.

Information

Type
VIII. Advances in XRD Instrumentation and Procedures
Information
Advances in X-Ray Analysis , Volume 30: Thirty-Fifth Annual Conference on Applications of X-ray Analysis, August 4-8, 1986 , 1986, pp. 429 - 437
Copyright
Copyright © International Centre for Diffraction Data 1986

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References

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