Quantitative neutron diffraction texture measurement applied to alpha-phase alumina and Ti(3)AlC(2)

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Date
2011-10-01
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Publisher
Wiley-Blackwell
Abstract
Orientation distribution functions, essential for making a quantitative connection between single-crystal and polycrystal properties, have been determined for extruded [alpha]-phase alumina, hot-pressed Ti3AlC2 and cold isostatically pressed Ti3AlC2 using experimental pole figures recorded on the fixed-wavelength neutron diffractometer KOWARI. Some practical improvements to the calculation of the pole-figure density from the raw area-detector data, and for constructing pole figures on an n x ndegrees hemispherical grid, are presented. The textures give some insight into particle flow during manufacture. Directly measured material textures were compared with one-dimensional pole density functions, such as the March and Rietveld functions commonly used for the correction of preferred orientation in Rietveld refinements, as a means of assessing the utility of the latter for the computation of diffraction elastic constants and other polycrystal properties from a given set of single-crystal properties. © 2011, Wiley-Blackwell
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Keywords
Texture, Neutron diffraction, Crystals, Aluminium oxides, Corrosion, Elasticity
Citation
Zhang, J.F., Kisi E. H., Kirstein O. (2011). Quantitative neutron diffraction texture measurement applied to alpha-phase alumina and Ti(3)AlC(2). Journal of Applied Crystallography, 44(Part 5), 1062-1070. doi:10.1107/S0021889811024150
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