Abstract
The corrosion kinetic models, incorporating the effects of chloride impurity and plastic deformation were proposed. Molten salt corrosion (MSC) damage was quantitatively described using the corrosion kinetic and the distance of materials points from the corrosion surface. By employing the elastic-viscoplastic theory with a hyperbolic-sine flow rule and the proposed damage model, a corrosion cracking mechanism-based model was developed and implemented using finite element (FE) analysis method. The corrosion-assisted cracking ahead of crack tips in accordance with the corrosion cracking mechanism was simulated. Furthermore, the predicted corrosion depth, corrosion morphologies, and multi-site corrosion cracking behaviors showed good agreement with the experimental results.
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