Effect of nitrogen on the susceptibility of austenitic Cr-Ni-Mn steels to delayed fracture under the action of stresses and hydrogen

The creation of austenitic steels with a supraequilibrium nitrogen concentration increases their strength substantially. However, their plasticity and fracture toughness can lie decreased. In particular, such steels can be susceptible to delayed fracture characteristic for high-strength steels with a martensite or bainite structure. It is of interest to investigate the susceptibility of austenitic Cr-Ni-Mn steels with different concentrations of nitrogen to delayed fracture under the action of stresses, corrosive media, and hydrogen.Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 24 – 25, March, 1996.