Mechanical properties of 304L stainless steel irradiated with 800 MeV protons

摘要

The tensile properties of 304L stainless steel have been investigated after low temperature (< = 250 deg C) irradiation with 800 MeV protons at the LANSCE accelerator to a maximum fluence of 3 X 10~(25) p/m~2, corresponding to a displacement dose of about 8.5 dpa. The results showed irradiation hardening and a concomitant loss of ductility with increasing proton fluences. Subsequent SEM observation revealed that the fracture mode changed from typical ductile to partial intergranular brittle after irradiation.