About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Nanostructured Materials in Extreme Environments
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Presentation Title |
Can Engineered Nanostructures Enhance the Performance of Tungsten for Extreme Environments? |
Author(s) |
Jason Trelewicz |
On-Site Speaker (Planned) |
Jason Trelewicz |
Abstract Scope |
The advancements in solute stabilized binary nanocrystalline alloys have motivated the pursuit of synergistic effects in ternary systems combining different alloying elements for enhancing stability and performance. Future fusion reactors provide an unprecedented challenge for materials stability, where even high melting temperature refractory metals are limited in such environments. The unique thermodynamic state occupied by nanocrystalline alloys provides an opportunity to access new stability regimes, which are explored in this presentation for combating structural instabilities in tungsten. We map compositional complexities in the W-Ti-Cr system through lattice Monte Carlo simulations to produce alloy design maps. A series of ternary nanostructured tungsten alloys are subsequently synthesized through high energy ball milling with in situ synchrotron x-ray diffraction employed for mapping microstructural stability and evolution up to 1500 °C. Bulk alloys retaining ultrafine grained microstructures are synthesized through field assisted sintering, thus demonstrating simultaneous stability and manufacturability enabled by synergistic alloy design. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Powder Materials, Computational Materials Science & Engineering |