About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Transmutation Effects in Fusion Reactor Materials: Critical Challenges & Path Forward
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Presentation Title |
No Ball Milling Needed: Revamping Fabrication Route of ODS Steel Plate with Cold Spray and Friction Stir Processing |
Author(s) |
Dalong Zhang, Jens T Darsell, Kenneth A Ross, Glenn J Grant, Iver E Anderson, Jia Liu, Xiaolong Ma, Danny J Edwards, Wahyu Setyawan |
On-Site Speaker (Planned) |
Dalong Zhang |
Abstract Scope |
Oxide dispersion strengthened (ODS) steels are promising structural materials for future fusion reactors. The state-of-the-art fabrication route for ODS steel plate involves production of powder by gas atomization, ball milling, powder vacuum canning, hot isostatic pressing, hot cross rolling, cold rolling, with annealing steps often required in-between rolling steps. This route is time consuming, expensive, difficult to scale up, and extremely delicate as cracks can develop and the plate can “bend out of shape” during the laborious rolling process. Instead, we have demonstrated a new route involving much less steps: production of precursor ODS steel powder with gas atomization reaction synthesis (GARS) without the need of ball milling, direct cold spray of GARS powder onto a ferritic-martensitic P92 steel substrate to form plate, friction stir processing of the plate to further refine microstructure and disperse Y/Ti/O species, and final heat treatment as needed to further improve nano-oxide characteristics and properties. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, High-Temperature Materials, Nuclear Materials |