7. Influence of fast neutron irradiation on deformation mechanisms of stainless steel type AISI 316 L

Effects of <I>In Situ</I> Irradiation by 20 MeV Protons on the Fatigue Properties of 316 Stainless Steel

“…It is reported in the fatigue studies on stainless steel performed near RT after in-reactor irradiation of about 1 dpa that the fatigue life was not fore, the fatigue life was much elongated (8). This might also be the case with the present result.…”

“…For the irradiation induced changes in the fatigue properties observed near room temperatures (RT) in annealed stainless steel, it was reported for the tests after in-reactor irradiation of about 1 dpa that for lower total strain amplifatigue properties changed after irradiation, e. g. the cyclic hardening before irradiatin changed to the cyclic softening after irradiation because of the increased strength due to irradiation, but no change in the fatigue life was observed (8). The elongation of fatigue life observed for lower e, was concluded to be associated with the increased strength after irradiation which caused a decrease in a plastic strain amplitude calculated from the eq.…”