Before revision: In the Freidel-Escaig mechanism, the two partials constrict to a point on their original glide plane, and then re-dissociate on the cross-slip plane creating two different partial dislocations.
After revision: , forming a perfect screwIn the Freidel-Escaig mechanism, the two partials constrict to a point on their original glide plane, and then re-dissociate on the cross-slip plane creating two different partial dislocations.