The Question of Saturation of Void Swelling in Fe-Cr-Ni Austenitic Alloys

摘要

Whereas in earlier publications it appeared that a possible saturation of neutron-induced void swelling might be developing at temperatures of 400 and 427deg C in annealed Fe-Cr-Ni model alloys in a manner that was dependent on composition, data obtained at higher neutron exposures in EBR-II have led to the conclusing that such an expectation was erroneous. At all temperatures in the range 400-650deg C, the neutroninduced swelling eventually reaches approx 1percent/dpa and continues to very high swelling levels thereafter without any hint of saturation.