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IRRADIATION-INDUCED SWELLING [1 record]
Record 1 - internal organization data 2009-10-09
Record 1, English
Record 1, Subject field(s)
- Atomic Physics
- Radiological Physics (Theory and Application)
Record 1, Main entry term, English
- irradiation-induced swelling
1, record 1, English, irradiation%2Dinduced%20swelling
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- void swelling 1, record 1, English, void%20swelling
correct
- VS 1, record 1, English, VS
correct
- VS 1, record 1, English, VS
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
Irradiation-induced swelling, also known as void swelling (VS), occurs in austenitic stainless steels and nickel-base alloys during neutron bombardment. Voids grow due to the migration and condensation of vacancies on the void nuclei (which can be gas bubbles) leading to an increase In material volume. This phenomenon is dependent on temperature, neutron flux, and neutron fluence. Swelling is typically a concern for fast reactors at temperatures above 350°C (662°F). 1, record 1, English, - irradiation%2Dinduced%20swelling
Record 1, Key term(s)
- irradiation induced swelling
Record 1, French
Record 1, Domaine(s)
- Physique atomique
- Physique radiologique et applications
Record 1, Main entry term, French
- gonflement sous irradiation
1, record 1, French, gonflement%20sous%20irradiation
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
La section efficace d'absorption neutronique du dysprosium est relativement élevée dans le domaine des neutrons thermiques ce qui confère au titanate une efficacité comparable aux matériaux classiques [...] Sous irradiation, le matériau se dégrade peu. Le gonflement de la phase fluorine est faible [moins de] 0,5 % en volume pour une fluence de 1022 neutrons par cm² en neutrons thermiques à 250-450 °C. Les phases orthorhombiques et hexagonales montrent un gonflement plus important, essentiellement dû aux changements de phases O[vers]H[vers]F, d'où l'intérêt de l'utilisation de la phase cubique stabilisée. Le matériau a été utilisé soit sous forme de poudres vibrocompactées, soit sous forme de pastilles frittées. Pour les poudres, le faible gonflement entraîne l'absence de déformation des gaines les contenant. Pour les pastilles, une fissuration apparaît dans les matériaux irradiés sous forte fluence du fait des contraintes dues aux dilatations différentielles induites par les gradients thermiques élevés ([plus de]> 60 °C/mm). 1, record 1, French, - gonflement%20sous%20irradiation
Record 1, Spanish
Record 1, Textual support, Spanish
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