2018 | ANNUAL REPORT 95 Cu was observed in some condi- tions at grain boundaries (Figure 7), second-phase boundaries, and dislocations.The dose dependency can be observed for Ni, Mn, Si, P, and Cu, but the temperature dependency is not clear. Strong segregation at the highest temperature might originate from the lack of temperature control. The highest RIS is observed for the element P, with the peak concentra- tion 44 times higher than the bulk concentration.The segregation of Ni, Mn and Si contributes to the precipi- tation of G-phase.The segregation of Cr to nitride surfaces facilitates the transformation of nitrides. Radiation-induced Precipitation A variety of radiation-induced modi- fications of the precipitation processes was observed, including the precipita- tion of G-phase, α', Cu-rich phase and modification of nitrides. Figure 7. RIS of minor elements on GBs in HT9 and T91 as a function of dose and irradiation temperature. The radius of the circles is proportional to the percentage concentration increase.