About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Local Ordering in Materials and Its Impacts on Mechanical Behaviors, Radiation Damage, and Corrosion
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Presentation Title |
Exploring the Thermal, Mechanical, and Radiation Stability of Refractory High Entropy Alloys via In-situ Electron Microscopy |
Author(s) |
Khalid Hattar, Eric Lang |
On-Site Speaker (Planned) |
Khalid Hattar |
Abstract Scope |
For many high temperature applications ranging from rocket nozzles to plasma facing components of fusion energy systems, it is important to have structural materials that can maintain the associated original properties. A newer class of material with promise for these applications is refractory high entropy alloys (RHEA) or multi-component alloys (RMCA). In order to explore the stability of these new materials to high temperature, mechanical deformation, and radiation damage, we utilized in-situ SEM and TEM laser heating, nanoindentation and in-situ SEM notched bend tests, as well as in-situ TEM ion irradiation and helium implantation. Examples of each of these experimental findings will be presented. Generally, this broad study has shown that the stability of RHEA to these extreme environments is highly alloy dependent. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, High-Entropy Alloys, Environmental Effects |