| About this Abstract |
| Meeting |
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Symposium
|
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Presentation Title |
Additive Manufacturing (AM) of Oxide Dispersion Strengthened (ODS) FeCrAl Using In Situ Oxidation |
| Author(s) |
Ty Austin, Steven Zinkle, Niyanth Sridharan |
| On-Site Speaker (Planned) |
Ty Austin |
| Abstract Scope |
Ultra-high-performance structural materials are needed to improve the safety of current fission reactor designs and meet the demands of the extreme environments proposed in advanced reactor designs. Oxide dispersion strengthened (ODS) FeCrAl alloys offer a possible solution by utilizing finely dispersed precipitates to improve high-temperature strength and irradiation tolerance. ODS FeCrAl suffers from production issues like batch-to-batch variability, long lead-times, and low throughput. This work produces ODS FeCrAl using directed-energy deposition (DED) additive manufacturing (AM) by applying an oxygen-rich atmosphere during production to reduce production costs and time. Two different oxygen addition methods were examined across many processing conditions. Sample characterization demonstrates the ability to significantly increase sample oxygen content, produce near 100% dense parts, and produce fine-scale precipitation. Detailed characterization using TEM, APT, and post-build heat treatments have been done to examine the effects of the varied and complex processing conditions under AM on the morphology of these precipitates. |
| Proceedings Inclusion? |
Undecided |