About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Characterization of Minerals, Metals and Materials 2022
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Presentation Title |
Direct Correlation of Frank Loop Nature and Morphology in Self-ion Irradiated Nickel |
Author(s) |
Kan Ma, Brigitte Décamps, Anna Fraczkiewicz, Frédéric Prima, Marie Loyer-Prost |
On-Site Speaker (Planned) |
Kan Ma |
Abstract Scope |
Face-Cubic Centered (FCC) materials such as novel austenitic materials present great potential for applications in Gen IV nuclear reactors. To better understand fundamental mechanisms of radiation damage in FCC structure, high-purity nickel and its alloys are irradiated using self-ions at 450/510°C as FCC model materials. Fine analysis of dislocation loops is performed in specimens prepared by by Focus Ion Beam followed by flash electropolishing using Transmission Electron Microscopy. For the first time to our knowledge, (i) vacancy loops are detected in irradiated nickel by the inside-outside method and stereo-microscopy and (ii) a drastic correlation between the Frank loop nature (vacancy-type v.s. interstitial-type) and their morphology (segmented v.s. circular) is identified. This correlation provides a new and simple TEM characterization method for the nature determination of Frank loops in nickel system. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, |