Strain aging and thermally activated mechanisms in alloys

The dynamic strain phenomena have been reported in many metals containing solute atoms. In this paper the motion of dislocations in the field of solute atoms which also move in the lattice is investigated. Both processes are assumed to be thermally activated. The dislocation velocity and the friction stress are calculated. The appearance of jerky flow, the occurrence of the plateau stress and anomalies in the stress dependence of the strain rate sensitivity are discussed.