A new mechanism was proposed for dynamic internal friction during creep. In addition to the energy which was dissipated due to the motion of dislocations, account was taken of the energy which was dissipated due to the formation of new dislocations during deformation. It was shown that the latter component played an important role in the dynamic internal friction, and was responsible for the appearance of the Q-1 versus time peak and the anomalous amplitude effect. Predictions which were based upon this mechanism were in agreement with creep data, and the concept could be generalized in order to treat other types of plastic deformation.

The Mechanism of Dynamic Internal Friction during Creep. Q.F.Kong, H.Zhou: Scripta Metallurgica et Materialia, 1995, 32[7], 1037-42