HELIUM BEHAVIOR IN VANADIUM-BASED ALLOYS IRRADIATED IN THE DYNAMIC HELIUM CHARGING EXPERIMENTS

Authors
FUKUMOTO K CHUNG HM GAZDA J SMITH DL MATSUI H
Citation
K. Fukumoto et al., HELIUM BEHAVIOR IN VANADIUM-BASED ALLOYS IRRADIATED IN THE DYNAMIC HELIUM CHARGING EXPERIMENTS, Science Reports of the Research Institutes, Tohoku University, Series A: Physics, Chemistry, and Metallurgy, 45(1), 1997, pp. 149-155
Citations number
12
Categorie Soggetti
Material Science","Metallurgy & Metallurigical Engineering
Journal title
Science Reports of the Research Institutes, Tohoku University, Series A: Physics, Chemistry, and Metallurgy → ACNP
ISSN journal
00408808
Volume
45
Issue
1
Year of publication
1997
Pages
149 - 155
Database
ISI
SICI code
0040-8808(1997)45:1<149:HBIVAI>2.0.ZU;2-V
Abstract
Helium effect of neutron irradiated vanadium alloys. containing titani um, has been studied using Dynamic Helium Charging Experiment (DHCE) i n FFTF. Cavity formation was observed only in pure vanadium irradiated at 430 to 600 degrees C and in V-5Ti irradiated at 600 degrees C. No apparent cavity formation was obtained in V-3Ti-1Si and V-4Cr-4Ti. The precipitation of titanium oxide in V-5Ti, V-3Ti-1Si and V-4Cr-4Ti occ urred in all irradiation conditions in this study and the precipitates of Ti5Si3 only appeared in V-3Ti-1Si irradiated at 600 degrees C up t o 15 dpa with helium generation rate of 4 appmHe/dpa. It is suggested that titanium oxide plays an important role for suppression of cavity formation and swelling from early stage of irradiation. Detail charact erization of precipitates and He effect for neutron damages in vanadiu m alloys are discussed here.