Skip to main content Accessibility help
×
Home

Nature of Slip in γ-Titanium Aluminide Above the Yield Stress Anomaly Temperature

  • S. Jiao (a1), N. Bird (a1), P. B. Hirsch (a1) and G. Taylor (a1)

Abstract

Crystals of γ-TiAl, containing ∼54.5 at% Al, with various orientations were deformed at different temperatures and examined by transmission electron microscopy (TEM). It was found that while in many cases slip and climb of ordinary dislocations tend to predominate, slip by [001] dislocations can be important also. The occurrence of [001] slip has not been reported before. The values of critical resolved shear stress were determined and strong locks on [001] dislocations have been identified as local segments of ½ ⟨112] dislocations arising from interactions between [001] and ½⟨110] dislocations.

Copyright

References

Hide All
1. Kawabata, T., Kanai, T. and Izumi, O., Acta Metall. 33, 1355 (1985).
2. Bird, N., Taylor, G. and Sun, Y.Q. in High Temperature Ordered Intermetallic Alloys, VI, edited by Horton, J., Baker, I., Hanada, S., Noebe, R.D. and Schwartz, D.S. (Mater. Res. Soc. Proc. 364, Pittsburgh, PA, 1995) pp. 635640.
3. Inui, H., Matsumuro, M., Wu, D-H. and Yamaguchi, M., Phil. Mag. A, 75, 395 (1997).
4. Jiao, S., Bird, N., Hirsch, P.B. and Taylor, G., Phil. Mag. A, 78, 777.
5. Jiao, S., Bird, N., Hirsch, P.B. and Taylor, G., this conference.
6. Bird, N., D.Phil. thesis, Oxford University.

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed