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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
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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

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References

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