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Forces on Dislocations in Multilayer Structures

Published online by Cambridge University Press:  25 February 2011

Somir V. Kamat ,
J. P. Hirth  and
B. Carnahan
Somir V. Kamat
Affiliation:
Ohio State University, Dept. of Metallurgical Engineering, Wlumbus, Ohio, 43210
J. P. Hirth
Affiliation:
Ohio State University, Dept. of Metallurgical Engineering, Wlumbus, Ohio, 43210
B. Carnahan
Affiliation:
University of Michigan, Dept. of Chemical Engineering, Ann Arbor, Michigan, 48109
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Abstract

In multilayer structures, dislocation forces that arise from coherency strains are well understood in both the isotropic and anisotropic elastic cases. Image forces produced by elastic inhomogeneity have also been developed for single layers surrounded by extended phases. Image forces for the multilayers are shown to reduce to the simpler single embedded layer case to a good approximation. Image forces are shown to lead to a “stand-off” position of interface dislocations from the interface, with several implications for the properties of multilayer structures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 103 , 1987 , 55
Copyright
Copyright © Materials Research Society 1988

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References

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