| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Systems for the Future of Fusion Energy
|
| Presentation Title |
Alternative ODS Steel Manufacturing with Gas Atomization Reaction Synthesis (GARS) and Friction-based Processing |
| Author(s) |
Dalong Zhang, Jens T Darsell, Glenn J Grant, Iver E Anderson, Xiaolong Ma, Jing Wang, Danny J Edwards, Wahyu Setyawan, Takuya Yamamoto, Robert Odette |
| On-Site Speaker (Planned) |
Dalong Zhang |
| Abstract Scope |
Oxide dispersion strengthened (ODS) steels are promising structural materials for future fusion reactors. The high-density (~1023/m3) of highly stable Y-(Ti)-O nano-oxides provide high sink strength for radiation resistance and high-temperature (> 650 °C) creep strength. Concomitantly, helium management is enabled by trapping high density (~1023/m3) of small (< 3 nm) helium bubbles in the vicinity of nano-oxides. However, conventional route of making ODS steels involves prolonged ball milling, canning, and laborious thermo-mechanical processing (TMP). GARS method has demonstrated the potential of making precursor ODS steel powders without ball milling, but the nano-oxide density was below 1022/m3 in the final consolidated form by conventional TMP. Taking advantage of GARS precursor powder, we use friction-based processing, including friction consolidation and/or friction extrusion, to manufacture ODS steel with further improved nano-oxide characteristics and mechanical properties. Preliminary results showed that Y-containing surface oxides and intermetallic particles were effectively refined due to severe deformation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Mechanical Properties, Characterization |