Oscillatory atomic relaxations in symmetrical grain boundaries in metals were investigated by using molecular dynamics methods. It was found that the density of atoms varied non-monotonically in various metastable grain boundaries, and that the amplitude, period and nature of the damping of the oscillations were essentially the same in these boundaries. A continuum model was proposed for the surface layer deformation which was produced by linear distributed forces. It was shown to describe adequately the oscillatory grain-boundary relaxation.

Oscillations of the Density of Atoms in the Vicinity of Symmetrical Grain Boundaries in Metals. E.I.Lugovskaya, T.I.Mazilova, I.M.Mikhailovskii: Physics of the Solid State, 2001, 43[6], 997-1000