Behavior of Oxygen in Fusion Candidate Vanadium Alloys during Oxidation and Annealing

Abstract:

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A V-4Cr-4Ti alloy and pure V were oxidized in flowing argon for 0.5-8h and subsequently annealed in vacuum for 16h at 973K. The oxygen of 1000-9000ppm was introduced into the V-alloys with little nitrogen, where oxygen was concentrated in region near the surface. By the annealing, oxygen was homogeneously diffused into depth of 150µm. The diffusion depth of oxygen in V-4Cr-4Ti is much smaller than that of pure V, because of Ti-O precipitates formed as oxygen trap. The study indicated that it is feasible to control oxygen level and distribute in the surface region of the vanadium alloys.

Info:

Periodical:

Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie

Pages:

1445-1448

DOI:

10.4028/www.scientific.net/MSF.475-479.1445

Citation:

Z. Yao et al., "Behavior of Oxygen in Fusion Candidate Vanadium Alloys during Oxidation and Annealing", Materials Science Forum, Vols. 475-479, pp. 1445-1448, 2005

Online since:

January 2005

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$35.00

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