The energy of dislocation dipoles

Author(s)
Gunther Schöck
Abstract

In conventional dislocation theory based on the concept of Volterra dislocations, the energy of coplanar dislocation dipoles cannot be obtained without introducing an ill-defined ad hoc annihilation distance. When the dislocations are described more realistically by Peierls dislocations, absolute values for the dipole energy can be obtained from physical arguments. It is found that when dislocations in a dipole come close, they may not annihilate each other but the dipole can collapse when the dislocations have reached a critical separation of several lattice constants.

Organisation(s)
Physics of Nanostructured Materials
External organisation(s)
Universität Wien
Journal
Philosophical Magazine
Volume
94
Pages
1542-1551
No. of pages
10
ISSN
1478-6435
DOI
https://doi.org/10.1080/14786435.2014.889327
Publication date
05-2014
Peer reviewed
Yes
Austrian Fields of Science 2012
103018 Materials physics
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/the-energy-of-dislocation-dipoles(0ea982f0-2ba5-42d9-8aa6-4c1dded582d8).html