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Relative Helicity and Jog Densities in Continuum Descriptions of Dislocations

Published online by Cambridge University Press:  11 February 2016

Thomas Hochrainer
Thomas Hochrainer*
Affiliation:
Universität Bremen, IW3, Am Biologischen Garten 2, 28359 Bremen, Germany.
*
*(Email: hochrain@uni-bremen.de)
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Abstract

Dislocations are line like crystal defects mediating plasticity in single crystals. In the current contribution we review classical continuum concepts of dislocation theory from a topological view point. Subsequently, we introduce a new measure for the density of jogs mutually impaired on each other by dislocations on different slip systems. This jog density is closely related to a topological measure of the interlinkage of the dislocations on the involved slip systems, known as relative helicity in other branches of physics.

Keywords

dislocationsstress/strain relationshipmetal

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Type
Articles
Information
MRS Advances , Volume 1 , Issue 25: Theory, Characterization, and Modeling , 2016 , pp. 1847 - 1852
Copyright
Copyright © Materials Research Society 2016 

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References

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