| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Innovative Powder/Wire Processing of Multifunctional Materials
|
| Presentation Title |
Effects of Gas Atomization Reaction Synthesis (GARS) Powder Size and Microstructure on Laser Powder Bed Fusion Consolidated ODS Steel |
| Author(s) |
Matthew deJong, Sourabh Saptarshi, Iver Anderson, Christopher Rock, Tim Horn, Djamel Kaoumi |
| On-Site Speaker (Planned) |
Matthew deJong |
| Abstract Scope |
Oxide Dispersion Strengthened (ODS) steels are promising candidate alloys for structural and cladding applications in Generation IV reactors. They must contain a high density of nanoscale oxides for high temperature mechanical strength and radiation resistance. In this work, Gas Atomization Reaction Synthesis (GARS) was used to produce powders that were used for Additive Manufacturing of ODS steels, in order to skip the traditional mechanical alloying of the powders, which is costly, time consuming and comes with the risk of contamination. Laser Powder Bed Fusion (LPBF) was used as the AM route to fabricate 14YWT-type of ODS alloys out of GARS powders of different sizes and chemistries. TEM was used to characterize the resulting microstructure to determine the effect of initial powder size and chemistry variations on the final microstructure. Hardness testing was performed on the consolidated ODS steels as a first means to assess the effect on mechanical properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Iron and Steel |