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- Title
Temperature Shift for Nanocluster Evolution in Ion-Irradiated Ferritic-Martensitic Alloys.
- Authors
Adisa, Saheed B.; Swenson, Matthew J.
- Abstract
Ferritic-martensitic (F/M) alloys are leading candidate materials for advanced reactors, but are known to experience nucleation and growth of solute nanoclusters, causing irradiation-induced embrittlement. In this study, two simulation models are applied to describe Si-Mn-Ni-rich nanocluster irradiation evolution, with each model predicting a negative temperature shift for Fe2+ ions to emulate nanocluster morphologies resulting from neutron irradiation to 3 dpa at 500°C. Using this prescribed shift, Fe2+ ion irradiation was conducted on three F/M alloys (T91, HCM12A, and HT9) to 3 dpa at 370°C. Atom probe tomography characterization shows that the morphologies for Si-Mn-Ni-rich and Cu-rich nanoclusters following Fe2+ irradiation at 370°C are comparable to the nanocluster morphologies after neutron irradiation at 500°C in all three F/M alloys, confirming the predicted shift. More precise temperature shifts for solute nanocluster irradiation evolution are likely dependent on the clustering species in question and their respective diffusion rates.
- Subjects
ATOM-probe tomography; NEUTRON irradiation; DISCONTINUOUS precipitation; LEAD alloys; NUCLEAR reactor materials; EMBRITTLEMENT; ALLOYS
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2022, Vol 74, Issue 11, p4069
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-022-05443-5