About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials Systems for the Future of Fusion Energy
|
Presentation Title |
N-26: Oxide-dispersion-strengthened Steel Processing by Additive Manufacturing of Gas Atomization Reaction Synthesis (GARS) Powders |
Author(s) |
Matthew Dejong, Ryan Schoell, Sourabh Saptarshi, Sarah Timmins, Emma White, Iver Anderson, Djamel Kaoumi, Christopher Rock, Timothy Horn |
On-Site Speaker (Planned) |
Matthew Dejong |
Abstract Scope |
Oxide-Dispersion-Strengthened steels have properties such as a high thermal conductivity, low thermal expansion coefficient, low void swelling during exposure to neutron irradiation, and high elevated-temperature strength that make them desirable for nuclear engineering structural applications [1]. A high density of Ti-Y oxide particles dispersed in the F/M matrix is at the source of many of these properties. Fe-15%Cr powders with additions of yttrium, titanium, and oxygen were obtained by gas atomization reaction synthesis (GARS), and printed via Laser-Powder-Bed-Fusion (L-PBF) Additive Manufacturing with controlled oxygen environments of Argon, 1% oxygen, 5% oxygen, and Air in layers. The resulting microstructure showed the formation of the oxide particles. Transmission Electron Microscopy (TEM) characterization was conducted on focused ion beam (FIB) lift-outs from each region. The impact of oxygen environment during L-PBF on the particle size distribution and overall density are discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Nuclear Materials, Iron and Steel |