Dislocation interactions with quenched-in defects, which were either partial or complete stacking-fault tetrahedra, in Cu and Au were studied by combining static and dynamic transmission electron microscope studies with molecular dynamics computer simulations. The interaction of a dislocation with a stacking-fault tetrahedron could result in the tetrahedron being sheared into two defects, converted to another defect type, or annihilated. These observations provided insight into defect interaction and annihilation mechanisms that were responsible for creating the defect-free channels in deformed irradiated material.

Dynamic Observations and Atomistic Simulations of Dislocation–Defect Interactions in Rapidly Quenched Copper and Gold. J.S.Robach, I.M.Robertson, H.J.Lee, B.D.Wirth: Acta Materialia, 2006, 54[6], 1679-90