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

Yeoh, LA; Liss, KD; Bartels, A; Chladil, HF; Avdeev, M; Clemens, H; Gerling, R; Buslaps, T

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

Date

2007-12

Authors

Publisher

Elsevier

Abstract

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 α2→α at the eutectoid temperature. The order parameter exhibits unexpected behavior and is entangled with the competition of different kinetic processes. © 2007, Elsevier Ltd.

Keywords

Titanium, Intermetallic compounds, Order-disorder transformations, Phase transformations, Synchrotron radiation, Recrystallization, Alloys

Citation

Yeoh, L. A., Liss, K. D., Bartels, A., Chladil, H., Avdeev, M., Clemens, H., Gerling, R., & Buslaps, T. (2007). In situ high-energy X-ray diffraction study and quantitative phase analysis in the α+γ phase field of titanium aluminides. Scripta Materialia, 57(12), 1145-1148. doi:10.1016/j.scriptamat.2007.08.021