Transmission electron microscopy investigation on dislocation bands in pure Mg

In the present study, the evidence of complex dislocation band formation in pure Mg has been reported. The transmission electron microscopy investigation suggests that the double cross-slip of <  c + a  > screw dislocations plays an important role in the evolution of dislocation structure within these bands. The existence of dislocation bands is explained on the basis of instability of slip on a basal slip system, which results in sudden propagation of slip on pyramidal planes.