On the Role of Internal Stresses in Void Denuded Zone Formation Under HVEM-Irradiation of Metals and Alloys Preconditioned by Reactor Exposure / YV. Konobeev, VA. Pechenkin, FA. Garner
- Conference Author:
- Effects of Radiation on Materials: 19th International Symposium (19th : 1998 : Seattle, Washington)
- Physical Description:
- 1 online resource (14 pages) : illustrations, figures, tables
- Additional Creators:
- Pechenkin, VA.
American Society for Testing and Materials
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- Irradiation of thin metallic foils in a High Voltage Electron Microscope (HVEM) has been widely used for investigating void swelling. One of the observations in HVEM experiments is the formation of void denuded zones in foils prepared from metals and alloys preconditioned by neutron irradiation. Under electron irradiation, pre-existing voids shrink in regions near foil surfaces. Such a shrinkage is thought to occur without any transfer of vacancies to other voids and is proposed to be related to the interstitial flux exceeding the vacancy flux into near-surface voids. In the present paper internal stresses arising due to non-uniform swelling under conditions of HVEM irradiation are taken into consideration. It is demonstrated that by assuming the presence of sufficiently large stress gradients within the foil one can explain the origin of the void shrinkage in near-surface zones and also explain why a swelling enhancement is often observed on the boundary of the voided zone.
- Dates of Publication and/or Sequential Designation:
- Volume 2000, Issue 1366 (January 2000)
- 9780803154193 (e-ISBN)
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- text file PDF
- Bibliography Note:
- Includes bibliographical references 21.
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- Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 2000. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
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