Thermodynamic modeling of the U–Mn and U–Nb systems

Liu, X.J.; Li, Z.S.; Wang, J.; Wang, C.P.

doi:10.1016/j.jnucmat.2008.07.008

Cited by 45 publications

(29 citation statements)

References 19 publications

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“…5 Fig. 2 Calculated U-X binary phase diagrams based on the present assessment in comparison with experimental data: (a) the U-Th system, [11] (b) the U-W system, [16] (c) the U-Nb system, [17] (d) the U-Cr system, (e) the U-Al system, [13] (f) the U-Co system, [13] (g) the U-Ga system, [16] and (h) the U-Mn system [17] Basic and Applied Research: Section I reference structure in a nonmagnetic state. The parameters of a¢ and b¢ are to be evaluated in the present optimization.…”

Section: Calculation Assessmentmentioning

confidence: 96%

“…Li et al [11] Kurata [12] Wang et al [13] Wang et al [13] Y Y Kurata et al [20] Wang et al [16] Y L i u et al [17] Y L i u et al [17] F F F Wang et al [16] Kurata [12] Th AEAEAE AEAEAE Y Y Wang et al [14] Y Y Wang et al [14] F Y Y Wang et al [18] Y Y Y F Y L ieta l . [11] Pu AEAEAE AEAEAE AEAEAE Turchi et al [19] F Y Wang et al [15] Kurata et al [21] Turchi et al [19] Wang et al [15] Y [12] Binary systems of the (U, Th, Pu)-X alloy database.…”

Section: Calculation Assessmentmentioning

confidence: 99%

“…These data are essential information for the calculation of multicomponent systems. Table 1 summarizes the assessment status of the (U, Th, Pu)-X (X = U, Th, [11] Pu, [12] Al, [13,19] Co, [13,14] Cr, Cu, [15] Fe, [14,20,21] Ga, [16,19] Mg, [15] Mn, [17] Mo, [18] Nb, [17] Ni, Si, Ta, W, [16] Zr [12,13] ) binary systems.…”

Section: Thermodynamic Databasementioning

confidence: 99%

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Thermodynamic Database and the Phase Diagrams of the (U, Th, Pu)-X Binary Systems

Wang

Fang

et al. 2009

J. Phase Equilib. Diffus.

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A thermodynamic database for nuclear materials, including U-Th, U-Pu, Th-Pu, and (U, Th, Pu)-X (X = Al, Co, Cr, Cu, Fe, Ga, Mg, Mn, Mo, Nb, Ni, Si, Ta, W, Zr) binary system has been developed by the Calculation of Phase Diagrams (CALPHAD) method. Thermodynamic parameters describing Gibbs free energies of different phases have been evaluated by optimizing experimental data on phase equilibria and thermodynamic properties. The present thermodynamic database can provide much-needed information such as stable and metastable phase equilibria, phase fractions, and various thermodynamic quantities that is important to the design of nuclear materials. This database is also an essential starting point to construct thermodynamic databases for the multicomponent systems.

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Section: Calculation Assessmentmentioning

confidence: 96%

Section: Calculation Assessmentmentioning

confidence: 99%

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Thermodynamic Database and the Phase Diagrams of the (U, Th, Pu)-X Binary Systems

Wang

Fang

et al. 2009

J. Phase Equilib. Diffus.

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“…Our goal is to develop the thermodynamic database of nuclear materials, and the present group has made some thermodynamic assessments in (U, Th, Pu)-X system [8][9][10][11][12][13][14][15]. In this paper, as a part of the thermodynamic database for the systems of the nuclear materials, the thermodynamic descriptions for the phase equilibria in the U-Ni and Th-Ni systems were carried out based on the available experimental data including phase diagram and thermodynamic properties by using the CALPHAD method.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic assessments of the U–Ni and Th–Ni systems

Wang¹,

He²,

Zhang³

et al. 2009

Journal of Alloys and Compounds

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“…-Nb alloy, which exhibits many advantages such as special nuclear properties and high density, is widely used in the national defense and nuclear energy engineering field [1][2][3][4][5] . Since the density of two elements varies greatly and diffusion of Nb in uranium is particularly sluggish, microsegregation forms after solidification [5] , and it is difficult to eliminate them in subsequent heat treatment process.…”

mentioning

confidence: 99%

Numerical simulation of microstructure evolution and microsegregation of U-Nb alloy during solidification process

Zhou

Deng

et al. 2017

China Foundry

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Male, born in 1985, Ph.D. His research interests mainly focus on multi-scale modeling and simulation of casting processes. Currently, he is paying much more attention to the microstructure simulation of uranium alloy. Abstract: In this work, a cellular automaton model has been developed to simulate the microstructure evolution of U-Nb alloy during the solidification process. The preferential growth orientation, solute redistribution in both liquid and solid, solid/liquid interface solute conservation, interface curvature and the growth anisotropy were considered in the model. The model was applied to simulate the dendrite growth and Nb microsegregation behavior of U-5.5Nb alloy during solidification, and the predicted results showed a reasonable agreement with the experimental results. The effects of cooling rates on the solidification microstructure and composition distribution of U-5.5Nb were investigated by using the developed model. The results show that with the increase of the cooling rate, the average grain size decreases and the Nb microsegregation increases. https://doi.org/10.1007/s41230-017-7135-6 U -Nb alloy, which exhibits many advantages such as special nuclear properties and high density, is widely used in the national defense and nuclear energy engineering field [1][2][3][4][5] . Since the density of two elements varies greatly and diffusion of Nb in uranium is particularly sluggish, microsegregation forms after solidification [5] , and it is difficult to eliminate them in subsequent heat treatment process. Therefore, it is of great significance to study of microstructure evolution and microsegregation behavior during the solidification process.U-Nb alloy is expensive and also radioactive, which limits the experimental research. In recent years, a variety of computer models, such as cellular automaton (CA) [6][7][8][9][10] , Monte Carlo [11] and phase field [12][13][14] , have been developed to simulate the microstructure evolution during the solidification process. CA method, as an efficient computational approach for microstructural simulation with a high computational efficiency, has been widely applied to the investigation of dendrite morphologies and microsegregation during metal solidification.In this work, a CA model has been developed to simulate the microstructure evolution of U-Nb alloy during solidification process. By using the model, microstructure evolution and Nb microsegregation behavior of U-5.5Nb alloy during solidification process were obtained, and an experiment was conducted for model validation. Then the model was applied to investigating the solidification microstructure and the composition distribution of U-5.5Nb under different cooling rates.

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Thermodynamic modeling of the U–Mn and U–Nb systems

Cited by 45 publications

References 19 publications

Thermodynamic Database and the Phase Diagrams of the (U, Th, Pu)-X Binary Systems

Thermodynamic Database and the Phase Diagrams of the (U, Th, Pu)-X Binary Systems

Thermodynamic assessments of the U–Ni and Th–Ni systems

Numerical simulation of microstructure evolution and microsegregation of U-Nb alloy during solidification process

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