Interactions of dislocations with the "forest"

In crystals with low lattice friction like in FCC metals, the flow stress and the strain hardening rate are governed by "forest" interactions, i.e., by the interaction of moving dislocations with non-coplanar dislocations piercing their slip plane. Junction formation contributes to most of this strengthening. The formation of dislocation junctions (white straight lines) induces the storage of an immobile density during plastic flow.

film_forest.mp4