Hydrogen solubility in zirconium intermetallic second phase particles
No Thumbnail Available
Date
2013-11-01
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
The enthalpies of solution of H in Zr binary intermetallic compounds formed with Cu, Cr, Fe, Mo, Ni, Nb, Sn and V were calculated by means of density functional theory simulations and compared to that of H in α-Zr. It is predicted that all Zr-rich phases (formed with Cu, Fe, Ni and Sn), and those phases formed with Nb and V, offer lower energy, more stable sites for H than α-Zr. Conversely, Mo and Cr containing phases do not provide preferential solution sites for H. In all cases the most stable site for H are those that offer the highest coordination fraction of Zr atoms. Often these are four Zr tetrahedra but not always. Implications with respect to H-trapping properties of commonly observed ternary phases such as Zr(Cr, Fe)2, Zr2(Fe, Ni) and Zr(Nb, Fe)2 are also discussed. © 2013, Elsevier B.V.
Description
Keywords
Zirconium alloys, Nuclear fuels, Copper, Nickel, Crystal lattices, Zircaloy 4
Citation
Burr, P. A., Murphy, S. T., Lumley, S. C., Wenman, M. R., & Grimes, R. W. (2013). Hydrogen solubility in zirconium intermetallic second phase particles. Journal of Nuclear Materials, 443(1-3), 502-506. doi:10.1016/j.jnucmat.2013.07.060