About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Nanostructured Materials in Extreme Environments
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Presentation Title |
Radiation Instability of Thermally Stable Nanocrystalline Pt-Au System |
Author(s) |
Ryan Michael Schoell, Chris Barr, Douglas Medlin, Dave Adams, Yasir Mahmood, Remi Dingreville, Fadi Abdeljawad, Brad Boyce, Khalid Hattar |
On-Site Speaker (Planned) |
Ryan Michael Schoell |
Abstract Scope |
Nanocrystalline microstructures are desirable due to their improved mechanical strength as well as providing sinks for radiation damage; however, the far-from-equilibrium nature of a nanocrystalline microstructure often leads to grain growth under various external stimuli such as thermal, mechanical loading, and radiation. In this work, we show how stability to one external stimulus does not mean stability to other external stimuli. Specifically, we show how a nanocrystalline Pt-10Au system is relatively stable under thermal and mechanical loading but not irradiation using high energy Au ions. A combination of Scanning Transmission Electron Microscopy (STEM) Energy Dispersive Spectroscopy (EDS), high resolution STEM, and modeling was used to illuminate the possible mechanisms of grain growth under different external stimuli and explain why microstructural stability only occurs under specific stimuli.
SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Nanotechnology, Environmental Effects |