Paper Title:
Cyclic Response and Fatigue Life of TiAl Alloys at High Temperatures
  Abstract

Fatigue properties of the new generation of TiAl alloys with 8at.% of Nb were studied and compared with those reported in the literature for previous generation with 2at.% of Nb. The high Nb content improves substantially the fatigue life time in the Basquin representation. Nevertheless, the fracture behaviour is still rather brittle even at 750°C. TEM study of the material after the fatigue testing was performed. The dislocation activity is concentrated in the  phase. The properties and behaviour of individual dislocations seem to be similar as those observed in single -phase TiAl alloys.

  Info
Periodical
Key Engineering Materials (Volumes 417-418)
Edited by
M.H Aliabadi, S. Abela, S. Baragetti, M. Guagliano and Han-Seung Lee
Pages
585-588
DOI
10.4028/www.scientific.net/KEM.417-418.585
Citation
T. Kruml, K. Obrtlík, M. Petrenec, J. Polák, "Cyclic Response and Fatigue Life of TiAl Alloys at High Temperatures", Key Engineering Materials, Vols. 417-418, pp. 585-588, 2010
Online since
October 2009
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Price
$32.00
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