Hostname: page-component-745bb68f8f-f46jp Total loading time: 0 Render date: 2025-01-28T23:22:31.701Z Has data issue: false hasContentIssue false
  • English
  • Français

Low Temperature Deformation Kinetics of Ruthenium Aluminide Alloys

Published online by Cambridge University Press:  10 February 2011

D. C. Lu  and
T. M. Pollock
D. C. Lu
Affiliation:
Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA 15213
T. M. Pollock
Affiliation:
Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA 15213
Get access

Abstract

The kinetics of low temperature deformation were investigated in several different polycrystalline RuAl alloys with the use of strain rate change experiments at 77 K and 298 K. Compositions investigated include RuAl, RuAl+0.5%B, Ru51.5 A48.5, Ru52 Al48, RU53 A147+0.5%B, Ru54.5 Al45.5, and Ru52 Al43 Sc5. Flow stresses did not vary substantially with temperature between 77 K and 298 K. Rate sensitivities were low compared to other B2 compounds and similar in all compositions investigated. Analyses of dislocation substructures after low strain deformation were conducted. The deformation kinetics and substructural observations suggest a higher intrinsic deformability for RuAI alloys with respect to the other high temperature B2 aluminides.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 552: Symposium KK – High-Temperature Ordered Intermetallic Alloys VIII , 1998 , KK7.11.1
Copyright
Copyright © Materials Research Society 1999

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. Fleischer, R.L., Field, R.D. and Briant, C.L., Metall. Trans., 1990, 21A, 2709.CrossRefGoogle Scholar
2. Fleischer, R.L. and McKee, D.W., Metall. Trans., 1993, 24A, 759.CrossRefGoogle Scholar
3. Sabariz, A.L.R. and Taylor, G., Mat. Res. Soc. Symp. Proc., 1997, 460, 611.CrossRefGoogle Scholar
4. Lu, D.C. and Pollock, T.M., Acta Mater., 1999, 47, 1035.Google Scholar
5. Miracle, D.B., Acta Metall. Mater., 1993, 41, 649.CrossRefGoogle Scholar
6. Noebe, R.D., Bowman, R.R. and Nathal, M.V., Int. Mater. Rev., 1993, 38, 193.CrossRefGoogle Scholar
7. Wolff, I. M., Metall. Mater. Trans., 1996, 27A, 3688.CrossRefGoogle Scholar
8. Somani, M.C., Muraleedharan, K., Birla, N.C., Singh, V. and Prasad, Y.V.R.K., Metall. Trans., 1994, 25A, 1693.Google Scholar
9. Li, J. C.M., in Dislocation Dynamics, ed. Rosenfield, A.R., Hahn, G.T., Bement, A.L., and Jaffee, R.I., McGraw-Hill, New York, 1968, 87.Google Scholar
10. Kocks, U.E, Argon, A.S., and Ashby, M.F., Prog. Mater. Sci., 1975, 19, 1.Google Scholar
11. Taylor, G., Prog. Mater. Sci., 1992, 36, 29.Google Scholar
12. Kitano, K. and Pollock, T.M., in Structural Intermetallics, ed. Darolia, R., Lewandowski, J.J., Liu, C.T., Martin, P.L., Miracle, D.B., and Nathal, M.V., TMS, Warrendale, PA, 1993, 591.Google Scholar
13. Kitano, K. and Pollock, T.M., Scripta Metall. Mater., 1994, 31, 397.CrossRefGoogle Scholar
14. Eow, K., Lu, D.C. and Pollock, T.M., Scripta Mater., 1998, 38, 1065.Google Scholar