Deformation experiments, performed in situ in a transmission electron microscope, were used to monitor dislocation dynamics. In one case, room-temperature work-hardening was studied. This improved the understanding of dislocation mobility, dislocation generation and dislocation-obstacle interactions. In another case, the interaction of matrix dislocations with grain boundaries was studied. This furnished predictive criteria for the transfer of slip through grain boundaries.

Observation of Dislocation Dynamics in the Electron Microscope. B.W.Lagow, I.M.Robertson, M.Jouiad, D.H.Lassila, T.C.Lee, H.K.Birnbaum: Materials Science and Engineering A, 2001, 309-310, 445-50