Effects of hold time and neutron irradiation on the low-cycle fatigue behaviour of type 316-CL and their consideration in a damage model

摘要

The creep fatigue behaviour of AISI type 316 L()N plate material has been investigated in the temperature range of 450-750 deg. C by performing axial strain controlled tests with GRIM specimens. The creep and creep fatigue behaviour of austenitic stainless steel material is known to be prone to neutron irradiation-induced embrittlement. Therefore, the irradiation behaviour was studied by performing irradiation experiments in the High Flux Reactor (HFR) of Petten at 550 deg. C. A newly developed damage model for time-dependent damage was applied to describe the failure of AISI 316 L(N) in the cyclic tests performed.