摘要
Influence of the nanoscale oxide particles on mechanical properties and irradiation resistance of oxide-dispersionstrengthened(ODS)ferritic steels is of critical importance for the use of the material in fuel cladding or blanket components in advanced nuclear reactors.In the present work,impact of structures of oxide dispersoids on the irradiation hardening of ODS ferritic steels was studied.Specimens of three kinds of high-Cr ODS ferritic steels containing oxide dispersoids with different number density and average size were irradiated with high-energy Niions at about−50℃.The energy of the incident Ni ions was varied from 12.73 to 357.86 MeV by using an energy degrader at the terminal so that a plateau of atomic displacement damage(∼0.8 dpa)was produced from the near surface to a depth of 24m in the specimens.
