Plasma and Fusion Research

Volume 12, 2405011 (2017)

Regular Articles

Effects of Irradiation Environment on V-4Cr-4Ti Alloys
Hideo WATANABE, Takeo MUROGA1) and Takuya NAGASAKA1)
Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasuga-kouenn, Kasugashi, Fukuoka 816-8580, Japan
National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
(Received 7 December 2015 / Accepted 6 September 2016 / Published 16 March 2017)


The effects of oxygen pick-up in an irradiation environment in a vacuum chamber during ion- and neutron-irradiation of V-4Cr-4Ti alloys were studied. The density and size of titanium oxides in the alloys were found to drastically increase because of the oxygen pick-up, especially for cases of higher irradiation dose and specimen temperature. Using Zr foil as a diffusion barrier and doping the V-4Cr-4Ti alloys with Y can be considered as effective techniques for reducing the reaction of Ti with C, O, and N to form Ti(C,O,N) because of oxygen-pick up from irradiation environment.


vanadium-chromium-titanium alloy, irradiation, oxygen, environmental effects, titanium oxide

DOI: 10.1585/pfr.12.2405011


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