Analysis of constituent redistribution in the γ (bcc) U-Pu-Zr alloys under gradients of temperature and concentrations

Y. H. Sohn; M. A. Dayananda; G. L. Hofman; R. V. Strain; S. L. Hayes

doi:10.1016/S0022-3115(99)00290-1

Analysis of constituent redistribution in the γ (bcc) U-Pu-Zr alloys under gradients of temperature and concentrations

Y. H. Sohn, M. A. Dayananda, G. L. Hofman, R. V. Strain, S. L. Hayes

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Abstract

Rods of a ternary alloy (71U-19Pu-10Zr by weight percent) were annealed under a temperature gradient of 220°C/cm for 41 days and examined for micro-structural development and compositional redistribution. An enrichment of Zr with concurrent depletion of U was observed within the γ (bcc) phase region on the hot-end side (T ≅ 740°C). The experimental redistribution of the elements in the γ (bcc) phase was analyzed in the framework of multicomponent mass transport with due consideration of thermotransport and ternary diffusional interactions. Based on a new analysis involving an integration of interdiffusion fluxes in the diffusion zone, kinetic parameters related to the thermotransport and ternary interdiffusion were calculated for each component i over selected ranges of composition. The thermotransport coefficients of U, Pu, and Zr were in the approximate ratio of 1:2:-4.5 in the hot-end region. In addition, the interdiffusion flux contributions arising from the gradients of temperature and concentrations of U and Zr were estimated.

Original language	English
Pages (from-to)	317-329
Number of pages	13
Journal	Journal of Nuclear Materials
Volume	279
Issue number	2-3
DOIs	https://doi.org/10.1016/S0022-3115(99)00290-1
State	Published - Jun 2000
Externally published	Yes

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@article{db2b6bf8ec9f41418282e0b3d9a3ede5,

title = "Analysis of constituent redistribution in the γ (bcc) U-Pu-Zr alloys under gradients of temperature and concentrations",

abstract = "Rods of a ternary alloy (71U-19Pu-10Zr by weight percent) were annealed under a temperature gradient of 220°C/cm for 41 days and examined for micro-structural development and compositional redistribution. An enrichment of Zr with concurrent depletion of U was observed within the γ (bcc) phase region on the hot-end side (T ≅ 740°C). The experimental redistribution of the elements in the γ (bcc) phase was analyzed in the framework of multicomponent mass transport with due consideration of thermotransport and ternary diffusional interactions. Based on a new analysis involving an integration of interdiffusion fluxes in the diffusion zone, kinetic parameters related to the thermotransport and ternary interdiffusion were calculated for each component i over selected ranges of composition. The thermotransport coefficients of U, Pu, and Zr were in the approximate ratio of 1:2:-4.5 in the hot-end region. In addition, the interdiffusion flux contributions arising from the gradients of temperature and concentrations of U and Zr were estimated.",

author = "Sohn, {Y. H.} and Dayananda, {M. A.} and Hofman, {G. L.} and Strain, {R. V.} and Hayes, {S. L.}",

note = "Funding Information: The diffusion and thermotransport analysis presented in this paper is part of a dissertation submitted by Sohn to Purdue University in partial fulfillment of the requirements for the PhD degree. Grateful appreciation is expressed to Argonne National Laboratory for the financial support.",

year = "2000",

month = jun,

doi = "10.1016/S0022-3115(99)00290-1",

language = "English",

volume = "279",

pages = "317--329",

journal = "Journal of Nuclear Materials",

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publisher = "Elsevier B.V.",

number = "2-3",

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TY - JOUR

T1 - Analysis of constituent redistribution in the γ (bcc) U-Pu-Zr alloys under gradients of temperature and concentrations

AU - Sohn, Y. H.

AU - Dayananda, M. A.

AU - Hofman, G. L.

AU - Strain, R. V.

AU - Hayes, S. L.

N1 - Funding Information: The diffusion and thermotransport analysis presented in this paper is part of a dissertation submitted by Sohn to Purdue University in partial fulfillment of the requirements for the PhD degree. Grateful appreciation is expressed to Argonne National Laboratory for the financial support.

PY - 2000/6

Y1 - 2000/6

N2 - Rods of a ternary alloy (71U-19Pu-10Zr by weight percent) were annealed under a temperature gradient of 220°C/cm for 41 days and examined for micro-structural development and compositional redistribution. An enrichment of Zr with concurrent depletion of U was observed within the γ (bcc) phase region on the hot-end side (T ≅ 740°C). The experimental redistribution of the elements in the γ (bcc) phase was analyzed in the framework of multicomponent mass transport with due consideration of thermotransport and ternary diffusional interactions. Based on a new analysis involving an integration of interdiffusion fluxes in the diffusion zone, kinetic parameters related to the thermotransport and ternary interdiffusion were calculated for each component i over selected ranges of composition. The thermotransport coefficients of U, Pu, and Zr were in the approximate ratio of 1:2:-4.5 in the hot-end region. In addition, the interdiffusion flux contributions arising from the gradients of temperature and concentrations of U and Zr were estimated.

AB - Rods of a ternary alloy (71U-19Pu-10Zr by weight percent) were annealed under a temperature gradient of 220°C/cm for 41 days and examined for micro-structural development and compositional redistribution. An enrichment of Zr with concurrent depletion of U was observed within the γ (bcc) phase region on the hot-end side (T ≅ 740°C). The experimental redistribution of the elements in the γ (bcc) phase was analyzed in the framework of multicomponent mass transport with due consideration of thermotransport and ternary diffusional interactions. Based on a new analysis involving an integration of interdiffusion fluxes in the diffusion zone, kinetic parameters related to the thermotransport and ternary interdiffusion were calculated for each component i over selected ranges of composition. The thermotransport coefficients of U, Pu, and Zr were in the approximate ratio of 1:2:-4.5 in the hot-end region. In addition, the interdiffusion flux contributions arising from the gradients of temperature and concentrations of U and Zr were estimated.

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DO - 10.1016/S0022-3115(99)00290-1

M3 - Article

AN - SCOPUS:0034207559

SN - 0022-3115

VL - 279

SP - 317

EP - 329

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 2-3

ER -

Analysis of constituent redistribution in the γ (bcc) U-Pu-Zr alloys under gradients of temperature and concentrations

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