Considerations about irradiation-induced precipitates in Soviet type reactor pressure vessel steels

Small angle neutron scattering (SANS) results on neutron irradiated Fe-Cu are presented and discussed and compared to positron annihilation results. An extended discussion is presented regarding a comparison of earlier positron annihilation and SANS measurements and their interpretation for different Soviet type reactor pressure vessel steels. It is suggested that the irradiation-induced precipitates contain vacancies and might be metal carbides.