In situ tensile straining transmission electron microscopic investigation of electrodeposited copper with a high density of nanoscale growth twins revealed that twin boundaries could serve as dislocation sources. Atomic steps at twin boundaries formed by sessile Frank partial dislocations were beneficial for twin boundaries serving as dislocation sources. The underlying mechanism that included dislocation reactions with twin boundaries was considered.

Dynamical Dislocation Emission Processes from Twin Boundaries. Y.B.Wang, B.Wu, M.L.Sui: Applied Physics Letters, 2008, 93[4], 041906