The properties of atomic states that were localized in the 2-dimensional lattice zone adjacent to the core of crystallite-conjugation regions, and were occupied by 57Co probes during their intercrystalline diffusion into polycrystalline Cr, were studied. Evidence for the appearance of vacancy-interstitial complexes in the vicinity of crystallite-conjugation regions at low homologous temperatures was presented for the first time. The composition of the segregation region gradually changed with increasing annealing temperature because of the thermal dissociation of vacancy-interstitial complexes, and the release of the resultant point defects from this zone. The interaction energy between an isolated interstitial impurity (presumed to be C) and the crystallite-conjugation regions was estimated to be 20kJ/mol.

Types and Properties of States Localized Beyond the core of Crystallite-Conjugation Regions and Occupied by 57Co During its Intercrystalline Diffusion in Polycrystalline Chromium. V.N.Kaigorodov, S.M.Klotsman, D.V.Zherebtsov: Physics of Metals and Metallography, 1998, 85[3], 348-54