Influence of point defect concentration on the generalized stacking‐fault energy in uranium dioxide.
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| Title: | Influence of point defect concentration on the generalized stacking‐fault energy in uranium dioxide. |
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| Authors: | Amodeo, Jonathan1 (AUTHOR) jonathan.amodeo@cnrs.fr, Bourasseau, Emeric2 (AUTHOR) |
| Source: | Journal of the American Ceramic Society. Sep2025, Vol. 108 Issue 9, p1-10. 10p. |
| Subjects: | Point defects, Mechanical behavior of materials, Nuclear fuels, Uranium, Fluorite |
| Abstract: | Stacking‐fault energy is a fundamental material property that significantly affects the shearability of crystalline materials by influencing the behavior of dislocations. Here, the impact of point defects on the stacking‐fault energy in UO2$\text{UO}_2$ nuclear fuel is investigated using a large‐set of molecular statics simulations combined to statistical analysis. A focus is made on the excess stacking‐fault energy induced by uranium Frenkel pairs usually produced during high‐temperature irradiation, in the main slip systems of the fluorite structure. The results show quantitative changes of the stacking‐fault energy that can vary up to several hundreds mJ/m2$\text{mJ/m}^{2}$ with point defect content, what might significantly influence dislocation core, mobility and more broadly, the mechanical behavior of the material. These results highlight the crossed link of point defects upon nuclear fuel mechanics and pave the way for further investigations into dislocation‐point defect interactions, particularly in the context of high‐temperature nuclear fuel applications. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 186371165 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Influence of point defect concentration on the generalized stacking‐fault energy in uranium dioxide. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Amodeo%2C+Jonathan%22">Amodeo, Jonathan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jonathan.amodeo@cnrs.fr</i><br /><searchLink fieldCode="AR" term="%22Bourasseau%2C+Emeric%22">Bourasseau, Emeric</searchLink><relatesTo>2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+the+American+Ceramic+Society%22">Journal of the American Ceramic Society</searchLink>. Sep2025, Vol. 108 Issue 9, p1-10. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Point+defects%22">Point defects</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+fuels%22">Nuclear fuels</searchLink><br /><searchLink fieldCode="DE" term="%22Uranium%22">Uranium</searchLink><br /><searchLink fieldCode="DE" term="%22Fluorite%22">Fluorite</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Stacking‐fault energy is a fundamental material property that significantly affects the shearability of crystalline materials by influencing the behavior of dislocations. Here, the impact of point defects on the stacking‐fault energy in UO2$\text{UO}_2$ nuclear fuel is investigated using a large‐set of molecular statics simulations combined to statistical analysis. A focus is made on the excess stacking‐fault energy induced by uranium Frenkel pairs usually produced during high‐temperature irradiation, in the main slip systems of the fluorite structure. The results show quantitative changes of the stacking‐fault energy that can vary up to several hundreds mJ/m2$\text{mJ/m}^{2}$ with point defect content, what might significantly influence dislocation core, mobility and more broadly, the mechanical behavior of the material. These results highlight the crossed link of point defects upon nuclear fuel mechanics and pave the way for further investigations into dislocation‐point defect interactions, particularly in the context of high‐temperature nuclear fuel applications. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1111/jace.20572 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 1 Subjects: – SubjectFull: Point defects Type: general – SubjectFull: Mechanical behavior of materials Type: general – SubjectFull: Nuclear fuels Type: general – SubjectFull: Uranium Type: general – SubjectFull: Fluorite Type: general Titles: – TitleFull: Influence of point defect concentration on the generalized stacking‐fault energy in uranium dioxide. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Amodeo, Jonathan – PersonEntity: Name: NameFull: Bourasseau, Emeric IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 00027820 Numbering: – Type: volume Value: 108 – Type: issue Value: 9 Titles: – TitleFull: Journal of the American Ceramic Society Type: main |
| ResultId | 1 |
