A wide low-temperature internal friction (mechanical loss) peak was observed during the heating and cooling of dilute solid solutions which had been deformed by cold-rolling. Careful deconvolution revealed that the peak had a fine structure and actually comprised 3 sub-peaks. Upon considering the behavior of these peaks during annealing, it was concluded that they were due to interactions between dislocations and point defects. This suggestion was supported by positron lifetime spectral data.

The Wide Lower Temperature Internal Friction Peak and its Positron Annihilation Study Q.D.Zou, Q.F.Fang, X.Y.Zhou, Z.F.Gong, B.Z.Yang: Journal of Physics - Condensed Matter, 1998, 10[25], 5657-66