Calphad thermodynamic description of some binary systems involving U

Berche, Alexandre; Dupin, N.; Guéneau, C.; Rado, C.; Sundman, Bo; Dumas, Jean-Christophe

doi:10.1016/j.jnucmat.2011.01.043

Cited by 61 publications

(18 citation statements)

References 44 publications

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“…Similar contents of uranium dioxide were reported for U-Mo/Al plate-type fuels fabricated using ground and atomized UMo powder [21]. The γ-U(Mo) phase is metastable at temperatures below about 1223 K and it is expected to decompose into α-U and U 2 Mo, as shown in the phase diagram in Figure 6 [19], [23]. However, the γ-U(Mo) phase does not immediately decompose into the two thermodynamically stable phases.…”

Section: Accepted Manuscriptsupporting

confidence: 63%

Structure and thermal properties of as-fabricated U-7Mo/Mg and U-10Mo/Mg low-enriched uranium research reactor fuels

Kulakov

Saoudi

Piro

et al. 2017

Journal of Nuclear Materials

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Section: Accepted Manuscriptsupporting

confidence: 63%

Structure and thermal properties of as-fabricated U-7Mo/Mg and U-10Mo/Mg low-enriched uranium research reactor fuels

Kulakov

Saoudi

Piro

et al. 2017

Journal of Nuclear Materials

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“…It appears that the liquidus temperature, especially for high Cr-alloys and the slightly higher solubility of Cr in c-Uranium (exceeding 1.5 wt%), as recommended in an earlier report of Rough are somewhat suspect [7]. Further, there are no measured data on transformation enthalpies, including melting and various thermophysical properties on this important binary system [3,4,9]. The kinetics related aspects of various solid state transformations as influenced by Cr-content have not been addressed in adequate detail [4].…”

Section: Introductionmentioning

confidence: 90%

“…On the contrary, the binary U-Cr system assumes special importance for a different reason, as Cr constitutes the second major element in nuclear grade 9Cr-based ferritic-martensitic steels [2]. A survey of extant literature on U-Cr binary system reveals that bcc-Cr does not dissolve appreciably even in the high temperature c-bcc phase of uranium, owing probably to size effect [3][4][5][6][7][8][9][10][11][12]. In addition, uranium is also insoluble in chromium, due to disparity in electronic structure characteristics [7,8].…”

Section: Introductionmentioning

confidence: 99%

Differential Scanning Calorimetry Study of U–Cr Alloys

Santhosh

Raju

et al. 2015

Trans Indian Inst Met

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The high temperature phase stability characteristics of U-xCr (x = 0, 1, 2, 3, 4, 5, 7, 9, 15 wt%) alloys have been investigated by dynamic calorimetry under slow heating (1 K min -1 ) in pure flowing Ar-atmosphere. The temperatures of various eutectic, eutectoid solid state phase transformations and that of melting have been measured as a function of Cr-content. These data are used to construct a partial U-Cr phase diagram on U-rich side, which showed good agreement with the recent assessment. The liquidus temperatures for higher Cr-contents, however exhibited a small upward shift as compared to equilibrium phase diagram estimates. The measured transformation enthalpies for the on-heating eutectoid and eutectic transformations exhibited an increase with Cr content of the alloys.

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“…For δ(U,Ti), their EMTO calculations gave a formation enthalpy of -0.402 eV/atom (-38.806 kJ/mole) while their FPLMTO gave -0.268 eV/atom (-25.865 kJ/mole)-the difference is -0.134 eV/atom (12.941 kJ/mole). Besides, they also estimated PAW would give -0.368 eV/atom (-35.483 kJ/mole) based on a third party calculation [51], which is also 0.034 eV/atom (3.323 kJ/mole) higher than EMTO's. Because δ(U,Ti) is completely ordered on both A and B site, SQS or CPA is not necessary to model it.…”

Section: ) Energeticsmentioning

confidence: 99%