| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals
|
| Presentation Title |
NanoPhase Separation Sintering in Mo and Mo-W Based Systems |
| Author(s) |
Christian Edward Oliver, Christopher Schuh |
| On-Site Speaker (Planned) |
Christian Edward Oliver |
| Abstract Scope |
Molybdenum and Molybdenum-Tungsten alloys have great potential for future nuclear power and thermal propulsion applications due to their high thermal stability, high thermal conductivity and corrosion resistance. However, Mo and Mo-W based alloys, often produced through a powder metallurgy route, can be difficult to produce, requiring high temperatures or pressure-assisted techniques such as hot isostatic pressing (HIP) to obtain dense parts. Nanophase Separation Sintering (NPSS) offers a way to design Mo-based alloys to exhibit low temperature pressureless sintering, involving the transient formation and resolutionization of second phase necks in the solid state. Experiments demonstrate that the addition of Cr as a sintering aid facilitates NPSS, obtaining near full density at low temperatures without applied pressure. Thermodynamic considerations for composition design for NPSS are also presented and experimentally evaluated. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Powder Materials, High-Temperature Materials, Other |