Abstract
Dislocation dynamics simulations of the interaction between prismatic dipolar loops and a glide screw dislocation are presented. As a result of stress gradients generated by the glide dislocation, dipolar loops execute drift motion along their glide cylinders. Simulations of the combined motion of two dipolar loops in the stress field of a glide dislocation clearly show that inter-loop forces are essential in determining their spatial trajectories. Under cyclic stress conditions, it is shown that same-type dipolar loops drift monotonically in the same direction, and that their spatial clustering is largely determined by strong inter-dipolar binding forces. The investigated sweeping mechanism is discussed in terms of the prerequisites for the formation of persistent slip bands under fatigue loading conditions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Modelling and Simulation in Materials Science and Engineering
Disclaimer: 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.