Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-25T17:32:19.719Z Has data issue: false hasContentIssue false
  • English
  • Français

Jerky Motion of Dislocations in Ni3Al and Ni3Ga. Experimental Observations and Modelling.

Published online by Cambridge University Press:  01 January 1992

Guy Molenat ,
Daniel Caillard ,
Alain Couret  and
Vaclav Paidar
Guy Molenat
Affiliation:
CEMES-LOE/CNRS, B.P. 4347, 31055 Toulouse Cedex, France,
Daniel Caillard
Affiliation:
CEMES-LOE/CNRS, B.P. 4347, 31055 Toulouse Cedex, France,
Alain Couret
Affiliation:
CEMES-LOE/CNRS, B.P. 4347, 31055 Toulouse Cedex, France,
Vaclav Paidar
Affiliation:
Institute of Physics, Na Slovance 2, 180 40 Praha 8, Czechoslovakia.
Get access

Abstract

Recent in situ and post mortem observations in Ni3Al and Ni3Ga alloys have yielded consistent results concerning the structure and the movement of screw superdislocations in {111} planes. The different stresses involved in the observed cross-slip processes have been computed, and the outline of a new model of stress anomaly has been formulated on the basis of these results.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 287
Copyright
Copyright © Materials Research Society 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Pope, D.P. and Ezz, S.S., Int. Met. Reviews, 29, 136 (1984).Google Scholar
2. Caillard, D., Couret, A. and Molénat, G., Proc. of the Int. Conf. on Fundamental Aspects of Dislocation Interactions, Ascona, Switzerland, 1992, Mat. Sci. and Eng, in the press.Google Scholar
3. Molénat, G. and Caillard, D., Phil. Mag., A64, 1291 (1991).Google Scholar
4. Couret, A., Sun, Y.Q. and Hirsch, P.B., Phil. Mag. A, in the press.Google Scholar
5. Molénat, G., Caillard, D., Sun, Y. and Couret, A., Proc. of the Int. Conf. on Fundamental Aspects of Dislocation Interactions, Ascona, Switzerland, 1992, Mat. Sci. and Eng, in the press.Google Scholar
6. Paidar, V., Pope, D.P. and Vitek, V., Acta Met., 34, 435 (1984).Google Scholar
7. Bontemps, C., Ph.D. Thesis, Université de Paris-Sud, France, 1991.Google Scholar
8. Bontemps, C. and Veyssière, P., Phil. Mag., A61, 259 (1991).Google Scholar
9. Korner, A., Phil. Mag. Letter, 66, 141 (1992).Google Scholar
10. Lin, D. and Wen, M., Proc. of the Int. Conf. on Fundamental Aspects of Dislocation Interactions, Ascona, Switzerland, 1992, Mat. Sci. and Eng, in the press.Google Scholar
11. Paidar, V., Molénat, G. and Caillard, D., Phil. Mag. A, in the press.Google Scholar