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Boundary Behavior and Confinement of Screw Dislocations

Published online by Cambridge University Press:  30 May 2017

Marco Morandotti
Marco Morandotti*
Affiliation:
Fakultät für Mathematik, Technische Universität München, Boltzmannstrasse, 3, 85748 Garching bei München, Germany.
*
*(Email: [email protected])

Abstract

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In this note we discuss two aspects of screw dislocations dynamics: their behavior near the boundary and a way to confine them inside the material. In the former case, we obtain analytical results on the estimates of collision times (one dislocation with the boundary and two dislocations with opposite Burgers vectors with each other); numerical evidence is also provided. In the latter, we obtain analytical results stating that, under imposing a certain type of boundary conditions, it is energetically favorable for dislocations to remain confined inside the domain.

Keywords

dislocationscrystalsimulation
Type
Articles
Information
MRS Advances , Volume 2 , Issue 48: Characterization, Theory and Modeling , 2017 , pp. 2633 - 2638
Copyright
Copyright © Materials Research Society 2017 

References

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