Development, preparation and characterization of uranium molybdenum alloys for dispersion fuel application

Sinha, Vineet; Prasad, G.; Hegde, P.V.; Keswani, R.; Basak, C.B.; Pal, Santanu; Mishra, Gauravi

doi:10.1016/j.jallcom.2008.05.061

Cited by 33 publications

(22 citation statements)

References 10 publications

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“…% Mo [7], and 10 wt. % Mo [13,14,19,20]. Some studies even found formation of metastable ordered phases, e.g., U 22 Mo 3 with P4/nbm structure, after quenching the -phase from the region temperatures [7,16,19].…”

Section: Introductionmentioning

confidence: 99%

Density-functional study of U–Mo and U–Zr alloys

Landa

Söderlind

Turchi

2011

Journal of Nuclear Materials

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Density-functional theory previously used to describe phase equilibria in U-Zr alloys [A.Landa, P. Söderlind, P.E.A. Turchi, J. Alloys Comp. 478 (2009) [103][104][105][106][107][108][109][110] is extended to investigate the ground-state properties of U-Mo solid solutions. We discuss how the heat of formation in both alloys correlates with the charge transfer between the alloy components, and how the specific behavior of the density of states in the vicinity of the Fermi level promotes the stabilization of the U 2 Mo compound. Our calculations prove that, due to the existence of a single -phase over the typical fuel operation temperatures, -U-Mo alloys should indeed have much lower constituent redistribution than -U-Zr alloys for which binodal decomposition causes a high degree of constituent redistribution.

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Section: Introductionmentioning

confidence: 99%

Density-functional study of U–Mo and U–Zr alloys

Landa

Söderlind

Turchi

2011

Journal of Nuclear Materials

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“…It has been demonstrated that aluminium base dispersion fuel with U 3 Si 2 as fuel material is very successful in converting reactor cores which requires fuel element loading of up to about 5 g U cm −3 [7,8]. However, still higher uranium density fuel compounds/alloys are required to be developed to fulfill the objective of developing a fuel system which can achieve a heavy metal density of 8-9 g U cm −3 , as many of the researchers wanted to develop a neutron source with high thermal neutron flux density for superior quality experiments [9]. The use of higher uranium density compounds like U 3 Si and U 6 Me where Me can be Fe, Ni, Mn, Co or Ge were proved unsuccessful for dispersion fuel application because they exhibit high swelling rate (break away swelling) even at relatively low burnups [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Phase transformation of metastable cubic γ-phase in U–Mo alloys

Sinha¹,

Hegde²,

Prasad³

et al. 2010

Journal of Alloys and Compounds

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“…Hence, it is a logical step to add Nb and Zr together into γ-U to form ternary γ-U-Zr-Nb alloys [1][2][3] . The γ-U(M) alloys has been produced by powder metallurgy, induction, and arc melting routes [3][4][5] . There are some reports in literature on U-Zr-Nb ternary alloys, performed near the U rich corner 2,3,6,7 , but not many around the Zr rich corner 8,9 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Structural Characterization of U-Zr-Nb Alloys

et al. 2017

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U-xZr-yNb alloys with values of x varying from 32% to 50% (wt.%Zr) and y varying from 6% to 10% (wt.%Nb) were produced by the arc melting technique. The effect of the addiction of zirconium and niobium on the phase stabilization of γ-U, lattice parameter, microstructure and elemental composition were examined by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscope (EDS) techniques. The alloys crystallized in a cubic symmetry composed by a γ-U(Zr,Nb) matrix and β-Zr small precipitates, when the content of zirconium and niobium is up to 55 wt.%. With further additions, e.g. 60 wt.%, was observed a highly enriched macrosegregation of β-Zr. It was also observed that the cell size of the γ-U(Zr,Nb) phase increase with the addition of Zr and Nb. The lattice parameter curve behavior as a function of zirconium and niobium deviates from a linear behavior at around x ≈ 50 and y ≈ 10 wt.%.

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Development, preparation and characterization of uranium molybdenum alloys for dispersion fuel application

Cited by 33 publications

References 10 publications

Density-functional study of U–Mo and U–Zr alloys

Density-functional study of U–Mo and U–Zr alloys

Phase transformation of metastable cubic γ-phase in U–Mo alloys

Synthesis and Structural Characterization of U-Zr-Nb Alloys

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