Hostname: page-component-76fb5796d-5g6vh Total loading time: 0 Render date: 2024-04-26T22:53:31.634Z Has data issue: false hasContentIssue false
  • English
  • Français

Crystallite Rotation Experiments Revisited: the Contribution of Free-Surface Interactions

Published online by Cambridge University Press:  21 February 2011

L. Balasubramanian  and
A.H. King
L. Balasubramanian
Affiliation:
Department of Materials Science & Engineering, State University of New York at Stony Brook, Stony Brook, NY 11794-2275, U. S. A
A.H. King
Affiliation:
Department of Materials Science & Engineering, State University of New York at Stony Brook, Stony Brook, NY 11794-2275, U. S. A
Get access

Abstract

While crystallite-rotation experiments of the type pioneered by Gleiter and his co-workers have provided a great deal of information about the variation of grain boundary energy with crystal misorientation, certain aspects of the experiments still remain puzzling. Notably, crystal rotation rates do not follow the form predicted by consideration of the Read-Shockley equation; and Chan and Balluffi have shown that in some cases certain crystallites are able to escape from the energy cusps that trap others [5]. In this paper we re-examine the crystallite rotation mechanism and rotation rates from the perspective of the interactions of grain boundary dislocations with the free surfaces that terminate the grain boundary.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 319: Symposia CB – Defect-Interface Interactions , 1993 , 245
Copyright
Copyright © Materials Research Society 1994

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

1. Read, W.T. and Shockley, W.: Phys. Rev., 78, 275 (1950).CrossRefGoogle Scholar
2. Hermann, G., Gleiter, H. and Bäro, G.: Acta Metall., 24, 353 (1976).CrossRefGoogle Scholar
3. Sautter, H., Gleiter, H., and Bäro, G: Acta Metall., 25, 467 (1977).CrossRefGoogle Scholar
4. Mykura, H.: Acta Metall., 27, 243 (1979).CrossRefGoogle Scholar
5. Chan, S.W. and Balluffi, R.W.: Acta Metall., 33, 1113 (1985).CrossRefGoogle Scholar
6. Bentzon, M.D., Karlen, A., and Thödén, A.R.: J. de Physique, 51, 1990, C1–89 Google Scholar
7. Hirth, J.P., and Lothe, J.: Theory of Dislocations, John Wiley & Sons, Inc., 1982, p.70.Google Scholar
8. Nabarro, F.R.N.: Theory of Crystal Dislocations, Oxford University Press, 1967, p. 175.Google Scholar
9. Kuhn, H., Bäro, G., and Gleiter, H.,: Acta Metall., 27, 959 (1979).CrossRefGoogle Scholar