A quantitative relationship between the mechanical stress field and local distribution of the shifts of electrode potentials and corrosion current densities in the metal containing a circular stress concentrator filled with corrosive medium is analytically determined. The dependences of the sizes of cathodic and anodic sections on the applied forces and the contents of Na + and Cl − ions in the medium are analyzed. The boundaries of the cathodic and anodic sections on the surface of the circular hole are determined. In order to evaluate the serviceability and durability of structural elements in the course of long-term opera- tion under the action of static loads and working media, it is important to establish the relationship between the stress-strain state of the metal and its electrochemical interaction with the medium, which substantially affects the strength, load-carrying ability, and fracture processes in the products. The force loading and the correspond- ing inhomogeneous stress field induce the space redistribution of current carriers in metallic bodies. In the pro- cess of tension of this body, the zone of the highest concentration of stresses turns into the anode, whereas the remaining part of the surface plays the role of cathode. Even small-size anodic and cathodic regions cause the motion of charges and, hence, the local electrochemical corrosion of the surface, where the metal body contacts with the corrosive medium. However, the mutual influence of the stress-strain state and the electrochemical in- teraction of media with metals is studied insufficiently. Fr this reason, we estimate the shifts of the electrode potentials and current density on the boundary of a circular hole in the metal placed in a corrosive medium in the process of deformation.
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