| Hydrogen embrittlement of materials is one of the important factors at an estimation of serviceability of designs. In spite of the fact that many works are devoted to research of hydrogen influence on properties of metals and alloys, there are enough "white" spots in this problem, in particular, the influence of kinetic processes inside a material, giving rise to hydrogen redistribution, on the basic strength characteristics at static and dynamic loading. Absence of authentic mechanical model, which description is based on the basic fundamental principles of rational mechanics, makes a problem rather actual, since, inherently, presence of such model would allow to describe influence of internal kinetics on macroparameters of a material, what is today extremely important in view of huge amount of hypotheses which are ready to confirm only concrete experiments and do not allow to use them in other cases. Present work offers the model based on experimental data on decrease in break energy of internuclear bonds at landing particles of hydrogen, i.e. decrease in a level of free energy. The offered model allows to explain the localization of hydrogen in the field of the increased concentration of stresses and change of material properties. |
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