| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Composite Materials for Nuclear Applications II
|
| Presentation Title |
Ion Beam Synthesis of Nano-Oxides in FeCr: Towards an Understanding of Precipitation in Oxide Dispersion Strengthened Steels |
| Author(s) |
Stephanie Jublot-Leclerc, Martin Owusu-Mensah, Aurélie Gentils |
| On-Site Speaker (Planned) |
Stephanie Jublot-Leclerc |
| Abstract Scope |
The properties of oxide dispersion strengthened steels, conventionally produced by powder milling, are highly dependent on the nature and size distribution of their constituting nano-oxide precipitates. A fine control of the processes of synthesis would enable the optimization of pertinent properties for use in various energy systems. This control however requires the knowledge of the mechanisms of precipitation, which are still a matter of debate. In the present study, nano-oxide precipitates were produced by implantation of Y, Ti and O ions in a Fe-10%Cr matrix subsequently thermally annealed. The results show that the oxides that precipitate are not necessarily favoured thermodynamically, but rather result from complex kinetics aspects related to the interaction between implanted elements and induced defects. In specific conditions, the formation of nanoprecipitates with precise characteristics similar to those in conventionally produced ODS steels is evidenced. Key elements in understanding the early stages of precipitation were obtained. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Other, Other |