Experimental data on the high-temperature internal friction background in such alloys were analyzed. A generally structure-independent behavior of the high-temperature internal friction background in solids was noted. Curves of ln[Q-1] versus 1/T contained 2 straight sections with differing effective activation energies but the same frequency dependence of Q-1. The observed exponential growth in internal friction was attributed to the migration of structural point defects.

I.V.Zolotukhin, J.E.Kalinin: Fizika Tverdogo Tela, 1995, 37[2], 536-45 (Physics of the Solid State, 1995, 37[2], 290-5)