About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Advances in Multi-Principal Elements Alloys X: Structures and Modeling
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Presentation Title |
High-throughput Ion Irradiation and Microstructural Characterization of Multi-principal-element Alloys |
Author(s) |
Michael J. Moorehead, Benoit Queylat, Phalgun Nelaturu, Daniel Murray, Mukesh Bachhav, Dan Thoma, Dane Morgan, Adrien Couet |
On-Site Speaker (Planned) |
Michael J. Moorehead |
Abstract Scope |
Multi-principal-element alloys (MPEAs) have garnered interest in the nuclear community for their apparent resistance to microstructural damage under irradiation. While both experimentation and simulation have demonstrated reduced hardening and void swelling in MPEAs, the relationship between composition and irradiation response is still poorly understood since a rich experimental database for MPEAs does not yet exist. In this work, to accelerate the generation of experimental irradiation-response data for MPEAs, high-throughput synthesis, irradiation, and characterization techniques have been employed. Specifically, additive manufacturing has been used to produce arrays of various MPEAs (1-cm2 coupons), which have been subsequently irradiated using 4-MeV Ni2+ ions to a peak damage of 200 dpa at 500 °C. Hardening and void swelling have been assessed using nanoindentation and trenching via plasma focused ion beam (PFIB), respectively. Trends in the experimental data relating hardening and void swelling behavior to composition have been analyzed using different machine learning approaches. |
Proceedings Inclusion? |
Planned: TMS Journal: Metallurgical and Materials Transactions |
Keywords |
Nuclear Materials, High-Entropy Alloys, Additive Manufacturing |