Dislocation contribution to hysteresis mechanism of internal friction at homological temperatures below 0.2

Resumo

The computations of the internal friction background arising due to the hysteresis mechanism of dislocation mobility in metallic systems at low temperatures carried out by different model representations are presented. It is shown that the general background of internal friction contains not only the losses due to hysteresis mechanism of oscillatory motions but also the losses due to other mechanisms of the structure defect mobility.