Abstract
Stress corrosion cracking (SCC) is one of the critical concerns as degradation of structural components in light water reactors for long period. It takes the form of intergranular stress corrosion cracking (IGSCC). Many studies on IGSCC have been conducted over several decades, however the mechanism of IGSCC initiation and propagation is not fully understood. In this study, a crystal plasticity model expressing IGSCC is proposed by considering information of oxidation along grain boundaries and failure of oxide film due to localization of deformation. From a crystal plasticity finite element analysis and a oxygen reaction-diffusion finite difference analysis based on the presented model, IGSCC is numerically reproduced and we discuss about the effect of dissolved oxygen and strain localization on the propagation behavior of crack.
