On the Local Conditions for Cleavage Initiation in Ferritic Steels

摘要: The present study is concerned with an investigation of the local conditions for initiation cleavage fracture in ferritic steels which have been analyzed context a research program directed to different methods assessment (Hohe et al. [Swindeman, R.W. al., Pressure Vessels and Piping, 507–512, 2004.]). investigations are performed experimentally numerically using German nuclear grade 22NiMoCr3-7 (A 508 class 2) pressure vessel steel as material example under forged conditions. heat treatment consists austenization at 900°C, quenching water, tempering 650°C 7.5 hours subsequent air cooling.