Journal of Applied Crystallography

Volume 26, Part 4 (August 1993)

research papers

 

Debye temperature and mean-square amplitudes of vibration of Ti₃ Al alloys

H. D. Shashikala, S. V. Suryanarayana and S. V. Nagender Naidu

Abstract: The meagre experimental data on the physical properties of titanium aluminides, in particular on the alloys belonging to the Ti₃Al phase, has prompted the authors to undertake a detailed study of these alloys. In this paper, Debye temperatures and mean-square amplitudes of vibration of four single-phase Ti₃Al alloys of composition 22.5, 25.0, 30.0 and 33.0% aluminium are presented. The root-mean-square amplitudes of vibration of stoichiometric Ti₃Al are compared with those of other metals having hexagonal-close-packed structures. The variation of the Debye temperature with the percentage of aluminium is also discussed.

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