Effect of helium to dpa ratio on fatigue behavior of austenitic stainless steel irradiated to 2 dpa

Bend-fatigue properties of 590 MeV proton irradiated JPCA and 316F SS

“…There are limited data on the fatigue life of irradiated austenitic stainless steels [5][6][7][8], with all of the data obtained by axial strain fatigue tests. There are no data on bend-fatigue life of irradiated specimens.…”

“…However, it is possible to discuss the irradiation effects on fatigue life. Some authors [5][6][7] report that fatigue life is reduced by irradiation. On the other hand, Puzzolante [8] concluded that there is little or no effect of irradiation on the fatigue life.…”

Fatigue properties of F82H irradiated at 523 K to 3.8 dpa

“…Fins were formed at the both ends of the gage section of the fatigue specimen. They were used to measure the axial stains by the laser extensometer during the tests [11,12]. For tensile tests, sheet type specimens with 7.86 mm gage length, 1.54 mm width and 0.76 mm thickness were also prepared from the material.…”

Full Issue

“…However, one of the important factors of the NPP life cycle is the condition of the reactor pressure vessel (RPV) and its fatigue life. The stainless steel used in this study has been investigated with DPA effect at 823 K temperature to a neutron fluence of 1×10 25 n/m 2 (Ioka et. al, 2000).…”