The effect of hold-times on the fatigue behaviour of type AISI 316L stainless steel under deuteron irradiation
Strain controlled fatigue tests have been performed in torsion at 400 C on type 316L stainless steel samples in both 20% cold worked and annealed conditions during an irradiation with 19 MeV deuterons. A hold time was imposed in the loading cycle. For the cold worked material, at shear strain ranges of 1.13% and 1.3%, irradiation creep induced stress relaxation led to the build up of a mean stress. The fatigue life was significantly reduced in comparison to thermal control tests. For the annealed material, tested under similar experimental conditions, irradiation creep effects were negligibly small compared to cyclic and irradiation hardening. The fatigue life was only slightly reduced. Continuous cycling tests conducted under irradiation conditions lay in the scatter band of the thermal control tests. The difference in fatigue life between continuous cycling and hold time tests is attributed mainly to the observed difference in irradiation hardening.
Bibliographic Reference: Article: Journal of Nuclear Materials (1998)
Record Number: 199810904 / Last updated on: 1998-08-07
Original language: en
Available languages: en