It was recalled that anelastic relaxation via intercrystalline atomic diffusion, which was analogous to thermal diffusion (thermoelastic effects) but had never been observed, had been suggested as a new mechanism in order to explain part of the H-damping spectra in intermetallic compounds. A critical experimental test of this model was made here by using an alloy which permitted a quantitative kinetic analysis. The results were in full agreement with the predictions of the model and fully supported the proposed so-called intercrystalline Gorsky effect as being a new form of mechanical damping in sufficiently fine-grained samples.

Mechanical Damping by Intercrystalline Diffusion of Hydrogen in Metallic Polycrystals. H.R.Sinning: Physical Review Letters, 2000, 85[15], 3201-4