Modelling the early development of secondary side stress corrosion cracks in steam generator tubes using incomplete random tessellation

摘要

A thorough understanding of the secondary side stress corrosion cracking of Inconel 600 in steam generator (SG) tubes seems to be still somewhat in the future. Especially the early phase of the development of cracks, also called the initiation phase, is beyond the present state-of-the-art explanations. An effort was, therefore, made to propose modelling and visualisation of the kinetics of secondary side stress corrosion crack initiation and growth on the grain-size scale: An incomplete random tessellation is used to approximate the random planar grain structure.