Hostname: page-component-745bb68f8f-f46jp Total loading time: 0 Render date: 2025-01-15T00:26:26.694Z Has data issue: false hasContentIssue false
  • English
  • Français

Mechanism of Deformation by Intervariant Boundary Motion in Shape-Memory Materials

Published online by Cambridge University Press:  21 March 2011

Robert C. Pond  and
Steven Celotto
Robert C. Pond
Affiliation:
Materials Science and Engineering, Department of Engineering, University of Liverpool, Brownlow Hill, Liverpool, L69 3GH, UK
Steven Celotto
Affiliation:
Materials Science and Engineering, Department of Engineering, University of Liverpool, Brownlow Hill, Liverpool, L69 3GH, UK
Get access

Abstract

The shape-memory effect relies on deformation in the martensitic state by motion of intervariant boundaries in response to an applied stress. A mechanism for this process in terms of interfacial defect generation, motion and interaction is proposed. This mechanism is conservative and is expected to operate with modest applied stresses and without thermal activation. Experimental observations of intervariant boundaries are discussed and atomistic simulations of the mechanism in such boundaries in hexagonal metals are presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 652: Symposium Y – Influences of Interface & Dislocation Behavior on Microstructure Evolution , 2000 , Y11.1
Copyright
Copyright © Materials Research Society 2001

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. Melton, K.N., General Applications of SMA's and Smart Materials, Shape Memory Materials, ed. Otsuka, K. and Wayman, C.M., (Cambridge University Press,1998), pp. 220–239 Google Scholar
2. Brinson, L. C., Journal of Intelligent Material Systems & Structures, 4, pp.229–242 (1993).Google Scholar
3. Pond, R.C. and Vlachavas, D.S., Proc. Royal Soc. Lond. A, 386, no. 1790, pp. 95–143 (1983).Google Scholar
4. Cahn, R.W., Acta Met., 1, 49, (1953).Google Scholar
5. Christian, J.W., The Theory of Transformations in Metals and Alloys, (Pergamon Press, 1965), pp. 743–764.Google Scholar
6. Wang, S.-C., PhD, University of Birmingham, 1999.Google Scholar
7. Weatherly, G.C., Perovic, A., Perovic, V., Phil. Mag. A, 79, no.9, pp. 2071–2082 (1999).Google Scholar
8. Pond, R.C., ine Defects in Interfaces, Chapter 38, Dislocations in Solids, ed. Nabarro, F.R.N (Elservier, 1989).Google Scholar
9. Serra, A., Bacon, D.J. and Pond, R.C., Acta Mat., 47, no.5, pp. 1425–39 (1999).Google Scholar
10. Hirth, J.P. and Pond, R.C., Acta Mat., 44, no. 12, pp. 4749–4763 (1996).Google Scholar
11. Pond, R.C., Bacon, D.J. and Serra, A., Acta Mat., 47, no.5, pp. 1441-53 (1999).Google Scholar