Consideration of Methods Evaluating the Growing Process of Stress Corrosion Cracking of 18-8 Stainless Steel in High Temperature Water Based on Electric Circuit Theory

—Cold Work—

Abstract

Methods evaluating the growing process of stress corrosion cracking (SCC) of 18Cr-8Ni (18-8) stainless steel (SS) in high temperature water were quantitatively investigated using the electric circuit model. In this paper, it was confirmed that effects of cold work and heat-affected zone (HAZ) of weld on crack growth rate (CGR) of 18-8 SS in high temperature water and the combined effects of cold work and sensitization could be estimated using equations regarding cold work from mathematical consideration of factors related to polarization resistance at crack tip.