Characterization of the nature and morphology of coarse precipitation in various oxide dispersion strengthened steels

Chemical and structural evolution of nano-oxides from mechanical alloying to consolidated ferritic oxide dispersion strengthened steel

“…12d). The decrease of the Ti bulk composition can be explained by the formation of coarse Ti-rich precipitates such as titanium oxides or carbonitrides already observed in other studies in too low number density to be comprised in the APT volumes [44,53,75,76]. Moreover, Ti segregation can occur over the thermal treatment as Ti-enriched GBs were identified.…”

The impact of outgassing on the nano-oxides kinetics of ferritic oxide dispersion strengthened steel

“…Therefore, this event is likely to correspond to the precipitation of a significant amount of or Ti(C, N) precipitates, which have previously being identified in a similar ODS steel grade [20]. The of these phases therefore happens after the outgazing stage.…”

“…At 1100°C, M 23 C 3 and M 7 C 3 types of carbides (very common in these steels) are not expected to be stable [20]. Moreover, this drop of C bulk composition matches with the drop of Ti bulk composition.…”