Deformation behavior and character of destruction in tension at the temperature 293 K of small and submicrocrystalline alloy Zr-1Nb are studied. It is established that the formation of a submicrocrystalline structure increases the localization of plastic deformation of the alloy and change the form of the dependence of the strain hardening on the stress-strain dependence.

The authors have carried out the comparative studies of hydrogen diffusion in coarseand submicrocrystalline titanium by the method of electrolytic cell conjugation with vacuum chamber through the membrane. It was ascertained that the formation of submicrocrystalline structure results in decrease of effective coefficient of hydrogen diffusion in titanium and increase of capacity to accumulate hydrogen in the volume. It is conditioned by large extension of grain boundary in submicrocrystalline samples in comparison with the coarse-crystalline ones. The authors have analyzed the influence of dislocation density and grain boundary extension on titanium capacity to accumulate hydrogen in the volume.

Clна повышенную скорость анодного окисления Zr по сравнению с Ti.Using the cyclic voltammetry method the authors study electrochemical behavior of Zr-1 % Nb alloy with coarse-grain (d=6 µm) and submicrocrystalline structure (d≈0,6 and 0,15 µm) obtained at severe plastic deformation, in H2SO4, HCl, NaOH solutions, artificial sea water, physiological solution. It is shown that the alloy structure influence on its electrochemical characteristics occurs to a greater extent in H2SO4 solutions owing to higher conversion rate of the material with submicrocrystalline structure into a passive state. Based on thermodynamic calculations of equilibrium activities of metal-solution interaction products as well as on the basis of anodic process parameter values the authors explain Clion activate influence on high velocity of anodic oxidation of Zr in comparison with Ti.

Two basic mechanisms of stress influence on the solid phase diffusion are revealed and analyzed. On the base of the analysis of presented mathematical model, the conclusion is formulated that only one of mechanisms works at the condition of symmetry deposition of the coating. It was confirmed experimentally for the Ni (Cu) system as example. The experiment technique and its results are presented in this paper. The possible generalization of the model for structure heterogeneous material and the ways of next development of the model are described.