Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-05T23:27:38.227Z Has data issue: false hasContentIssue false
  • English
  • Français

Creep of TiAl alloys at 750°C under moderate stress

Published online by Cambridge University Press:  26 February 2011

Alain Couret  and
Joel Malaplate
Alain Couret
Affiliation:
CEMES/CNRS, 29 rue J. Marvig, BP 4347, 31055 Toulouse Cedex 4, France
Joel Malaplate
Affiliation:
CEMES/CNRS, 29 rue J. Marvig, BP 4347, 31055 Toulouse Cedex 4, France
Get access

Abstract

The creep properties at 750°C of TiAl alloys produced by cast and powder metallurgy processes are investigated by creep tests and subsequent TEM investigations. It is demonstrated that the same dislocation mechanism is controlling the primary and secondary creep stages in these two alloys. This mechanism is the mixed climb of ordinary dislocations. Explanations to the creep behaviour during primary and secondary stages are then proposed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 842: Symposium S – Integrative and Interdisciplinary Aspects of Intermetallics , 2004 , S7.8
Copyright
Copyright © Materials Research Society 2005

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. Beddoes, J., Wallace, W. and Zhao, L., International Materials Reviews. 40, 197 (1995).Google Scholar
2. Appel, F. and Wagner, R., Materials Science & Engineering R: Reports. R22, 1 (1998).Google Scholar
3. Malaplate, J., PhD Thesis, Université Paul Sabatier (2003).Google Scholar
4. Couret, A., A., , Intermetallics 9, 899 (2001).Google Scholar
5. Malaplate, J. and Couret, A., International Conference on Processing and Manufacturing of Advanced Materials, Vol. 426–432, edited by Chandra, T., Torralba, J. and Sakai, T. (Leganes-Madrid, Spain, Trans Tech, Publications LTD, Switzerland) (2003).Google Scholar
6. Malaplate, J., Caillard, D. and Couret, A., Accepted in Philosophical Magazine (2005).Google Scholar
7. Kad, B.M. and Fraser, H.L., Philosophical Magazine A 69, 689 (1994).Google Scholar
8. Thomas, M. and Naka, S., Matériaux and techniques, 1–2, 13 (2004).Google Scholar