Void swelling and segregation of solute in ion-irradiated ferritic steels

Microstructural evolution of proton irradiated T91

“…Ohnuki et al observed Cr enrichment in Fe-13Cr and Fe-13Cr-1Si irradiated to 57 dpa with 200 keV C+ ions [36]. However, they observed Cr depletion in Fe-13Cr-1Ti in the same study and in electron irradiated Fe-13Cr (without the presence of additional C) [37].…”

Microstructural development in advanced ferritic–martensitic steel HCM12A

“…Low angle lath boundaries are not expected to have significant segregation, so the measurements in Clausing's work might be related to precipitate formation. Ohnuki et al [24] irradiated Fe-Cr model alloys with 200 keV C and found Cr enrichment at grain boundaries. For the work of both Takahashi and Mahon, the measured profiles were large (>100 nm) compared to typical radiation-induced segregation profiles.…”

Transmission electron microscope study of fusion-environment radiation damage in iron and iron-chromium alloys

“…Ohnukl et al [57] have reported the observation of cubic cavities with {100} faces in Iron irradiated with 200 keV C^ ions at 798 K (525°C). Radiation induced segregation and precipitation were also studied, although the effects of implanted carbon dominated these processes.…”

“…The studies have utilized iron-ion [51][52][53], nickel-ion [34,[54][55][56], carbon-ion [57] , and other heavy ion (Ge"*", Kr"*", Xe+, W^) [52] irradiations. Only one study [58] has employed a dual beam of heavy ions (nickel) and helium ions to simulate the fusion environment.…”

“…Expected cavity morphologies have been reported twice for irradiated ferritic materials, Kulcinski et al [30] have reported "truncated octahedral" cavities with {110} faces and {110} truncations (presumably this reported shape could also be referred to as a 12-sided polyhedron with {110} faces) in neutronirradiated iron. Ohnuki et al, [57] have reported cubic cavities with {100} faces in C^ irradiated iron.…”