Cyclic Response and Fatigue Life of TiAl Alloys at High Temperatures


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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.



Key Engineering Materials (Volumes 417-418)

Edited by:

M.H Aliabadi, S. Abela, S. Baragetti, M. Guagliano and Han-Seung Lee




T. Kruml et al., "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




[1] G. Henaff, A.L. Gloanec: Intermetallics Vol. 13 (2005), p.543.

[2] T. Kruml, K. Obrtlík, M. Petrenec, J. Polák: Int. J. Mat. Res. Vol. 100 (2009), p.349.

[3] A.L. Gloanec, M. Jouiad, D. Bertheau, M. Grange, G. Hénaff: Intermetallics Vol. 15 (2007), p.520.


[4] A. Couret: Phil. Mag. Vol. 79 (1999), p. (1977).

[5] B. Viguier, K. Hemker, J. Bonneville, F. Louchet, J.L. Martin: Phil. Mag. A Vol. 71 (1995), p.1295.

[6] F. Diologent, T. Kruml: Mat. Sci. Eng. A Vol. 487 (2008), 377.