The 2 most prominent internal friction peaks in cold-worked metals at low temperatures were shown to be related manifestations of the same nucleation mechanism of kink plus anti-kink pairs in pinned dislocation segments. Their appearance depended upon the absence (Bordoni peak) or presence (Niblett-Wilks peak) of geometrical kinks (anti-kinks). Diffusion of the nucleated thermal pairs accounted for the observed background internal friction.

F.Marchesoni: Physical Review Letters, 1995, 74[15], 2973-6