Transmission electron microscopy study of the interaction between a glide dislocation and a dislocation node

Abstract

Using in-situ tensile straining in conjunction with stereo imaging in a transmission electron microscope, real-time observations have been made in thin copper foils of the interaction of glide dislocations with a dislocation node. A mechanism is observed by which a dislocation approaching the node effectively bypasses the node by exchanging segments with one of the dislocations constituting the node.

Acknowledgement

This research is funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences.