Fracture behavior of reactor steel 20MnMoNi 55 in the transition temperature region

Abstract The fracture represents the final phase of crack propagation, and causes their occurrence or partial propagation in real constructions made ferritic steels can be different. Along with cracks, influences such as stress concentration low temperature contribute to being “faster” have an impact on mechanics parameters, well fact that is more likely occur due cleavage. parameters discussed this study are Jc rc (parameter, i.e. distance between fatigue tip cleavage initiation site) by testing C(T)50 specimen transition region. Grooved C(T) specimens were reactor steel 20MnMoNi 55 two thickness values, since additional goal was present influence tested specimens. it, other understanding region presented.