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

La Reine A. Yeoh*, Klaus Dieter Liss, Arno Bartels, Harald Chladil, Maxim Avdeev, Helmut Clemens, Rainer Gerling, Thomas Buslaps

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

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.

Original languageEnglish
Pages (from-to)1145-1148
Number of pages4
JournalScripta Materialia
Volume57
Issue number12
DOIs
StatePublished - Dec 2007
Externally publishedYes

Keywords

  • Intermetallic compounds
  • Order-disorder phenomena
  • Phase transformation kinetics
  • Synchrotron radiation
  • Titanium aluminides

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