$In situ high-energy X-ray diffraction study and quantitative phase analysis in the α + γ phase field of titanium aluminides$

In situ high-energy X-ray diffraction study and quantitative phase analysis in the α + γ phase field of titanium aluminides

Quantitative atomic structure and phase analysis in the titanium aluminide intermetallic system of composition Ti–45Al–7.5Nb–0.5C (at.%) was conducted in situ by use of high-energy X-ray diffraction from a synchrotron and evaluated using the Rietveld method, implementing a model for atomic order in...

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Bibliographic Details
Published in:	Scripta materialia 2007-12, Vol.57 (12), p.1145-1148
Main Authors:	Yeoh, LaReine A., Liss, Klaus-Dieter, Bartels, Arno, Chladil, Harald, Avdeev, Maxim, Clemens, Helmut, Gerling, Rainer, Buslaps, Thomas
Format:	Article
Language:	eng
Subjects:	Intermetallic compounds Order–disorder phenomena Phase transformation kinetics Synchrotron radiation Titanium aluminides
Online Access:	Get full text
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Summary:	Quantitative atomic structure and phase analysis in the titanium aluminide intermetallic system of composition Ti–45Al–7.5Nb–0.5C (at.%) was conducted in situ by use of high-energy X-ray diffraction from a synchrotron and evaluated using the Rietveld method, implementing a model for atomic order in the α-phase which describes the order to disorder transition α 2 → α at the eutectoid temperature. The order parameter exhibits unexpected behavior and is entangled with the competition of different kinetic processes.
ISSN:	1359-6462 1872-8456