Actions for Defect Behavior and Microstructural Evolution in Vanadium-Base Alloys Under Irradiation in a High-Voltage Electron Microscope

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Defect Behavior and Microstructural Evolution in Vanadium-Base Alloys Under Irradiation in a High-Voltage Electron Microscope / T. Muroga, K. Araki, N. Yoshida

Conference Author
Reduced Activation Materials for Fusion Reactors (1988 : Andover, MA)
Physical Description
1 online resource (11 pages) : illustrations, figures, tables
Additional Creators
Araki, K., Muroga, T., Yoshida, N., American Society for Testing and Materials, and ASTM International
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Summary
The formation and growth of dislocation loops have been investigated under irradiation in the high-voltage electron microscope (HVEM) for the V-20Ti and V-3Ti-lSi alloys at temperatures ranging from 100¿̐ưC to 350¿̐ưC. In all cases, the loop number density increased, reaching saturation. The dependence of the saturated loop density on the temperature and the irradiation intensity showed that, in either alloy, the interstitials are deeply trapped by matrix impurities providing the loop nucleation sites at lower temperatures. In the case of the V-3Ti-lSi alloy, di-interstitials are expected to be the effective loop nuclei at higher temperatures. The temperature dependence of loop growth rate showed the effective vacancy migration energy of 1.36 eV and 1.22 eV for the V-20Ti and V-3Ti-lSi alloy, respectively. The present experiments showed some characteristic sample degradation (local bending, contamination) during in-HVEM annealing or irradiation suggesting a need for careful heat or environmental control.
Dates of Publication and/or Sequential Designation
Volume 1990, Issue 1047 (January 1990)
Subject(s)
Other Subject(s)
ISBN
9780803151130 (e-ISBN)
9780803112674
080311267X
Digital File Characteristics
text file PDF
Bibliography Note
Includes bibliographical references 11.
Other Forms
Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
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Also available in PDF edition.
Reproduction Note
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1990. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
Technical Details
Mode of access: World Wide Web.
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ASTM International PDF Purchase price USD25.
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