Abstract
Dislocation generation by a Frank–Read source was considered for the case of nanocrystalline metallic materials. It was shown that thermally activated operation of this mechanism, which was proposed in the literature as an explanation for the observed grain size dependence of the strain rate sensitivity (SRS) of the flow stress, is only possible in a very limited range of the source lengths and stresses. By comparing the calculated SRS with the experimental data for copper, it was further demonstrated that the thermally activated Frank–Read mechanism can be discarded as a process underlying the observed strain rate sensitivity data.
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.
