Abstract
AbstractThe wide‐spread treatment of thermally activated unpinning of dislocations from point obstacles in terms of the absolute rate theory is criticized. In particular, doubts are raised about the validity of the assumption that a thermodynamic equilibrium distribution is established between the equilibrium state of a pinned dislocation and its saddle‐point configuration. In analogy to Rice's dynamical theory of diffusion an alternative approach to dislocation unpinning is suggested, which does not make use of this assumption and which furthermore accounts for unpinning transitions by‐passing the saddle‐point configuration.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
