Analysis of the Effect of Applied Load on Crevice Corrosion Behavior

A two-dimensional numerical model incorporating solid mechanics, electrochemistry, mass diffusion, and ion migration processes is developed to investigate the load effect on crevice corrosion. The a transient of corrosion occurring in cracks 304 stainless steel dilute NaCl solution, interaction between stress electrochemical was considered. By solving multiphysical coupling COMSOL, applied crack tip region calculated, local current density with concentration within also calculated by using Tafel relationship. distribution Fe2+ ion, Na+ CL− H O2 substance concentrations cavity predicted equation analysis transport. results show that metal oxidation more clearly affected plastic deformation, rate hydrogen evolution reaction increases enhancement, oxygen absorption not strain. iron ions, hydrogen, rate, sodium chloride ions electrolyte potential.