Phase-field simulation of intergranular bubble growth and percolation in bicrystals

Paul C. Millett; Michael R. Tonks; S. B. Biner; Liangzhe Zhang; K. Chockalingam; Yongfeng Zhang

doi:10.1016/j.jnucmat.2011.07.034

Phase-field simulation of intergranular bubble growth and percolation in bicrystals

Paul C. Millett, Michael R. Tonks, S. B. Biner, Liangzhe Zhang, K. Chockalingam, Yongfeng Zhang

Materials Research Institute (MRI)

Research output: Contribution to journal › Article › peer-review

51 Scopus citations

Abstract

Three-dimensional phase-field simulations of the growth and coalescence of intergranular bubbles in bicrystal grain geometries are presented. We investigate the dependency of bubble percolation on two factors: the initial bubble density and the bubble shape, which is governed by the ratio of the grain boundary energy over the surface energy. The simulations show that variations of each of these factors can lead to large discrepancies in the bubble coalescence rate, and eventual percolation, which may partially explain this observed occurrence in experimental investigations. The results presented here do not account for concurrent gas production and bubble resolution due to irradiation, therefore this simulation study is most applicable to post-irradiation annealing.

Original language	English (US)
Pages (from-to)	130-135
Number of pages	6
Journal	Journal of Nuclear Materials
Volume	425
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jnucmat.2011.07.034
State	Published - Jun 2012

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
General Materials Science
Nuclear Energy and Engineering

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10.1016/j.jnucmat.2011.07.034

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title = "Phase-field simulation of intergranular bubble growth and percolation in bicrystals",

abstract = "Three-dimensional phase-field simulations of the growth and coalescence of intergranular bubbles in bicrystal grain geometries are presented. We investigate the dependency of bubble percolation on two factors: the initial bubble density and the bubble shape, which is governed by the ratio of the grain boundary energy over the surface energy. The simulations show that variations of each of these factors can lead to large discrepancies in the bubble coalescence rate, and eventual percolation, which may partially explain this observed occurrence in experimental investigations. The results presented here do not account for concurrent gas production and bubble resolution due to irradiation, therefore this simulation study is most applicable to post-irradiation annealing.",

author = "Millett, {Paul C.} and Tonks, {Michael R.} and Biner, {S. B.} and Liangzhe Zhang and K. Chockalingam and Yongfeng Zhang",

note = "Funding Information: PCM gratefully acknowledges insightful conversations with David Andersson and Megan Frary. All authors gratefully acknowledge financial support from the Nuclear Energy Modeling and Simulation (NEAMS) program within the US Department of Energy. Copyright: Copyright 2012 Elsevier B.V., All rights reserved.",

year = "2012",

month = jun,

doi = "10.1016/j.jnucmat.2011.07.034",

language = "English (US)",

volume = "425",

pages = "130--135",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Phase-field simulation of intergranular bubble growth and percolation in bicrystals

AU - Millett, Paul C.

AU - Tonks, Michael R.

AU - Biner, S. B.

AU - Zhang, Liangzhe

AU - Chockalingam, K.

AU - Zhang, Yongfeng

N1 - Funding Information: PCM gratefully acknowledges insightful conversations with David Andersson and Megan Frary. All authors gratefully acknowledge financial support from the Nuclear Energy Modeling and Simulation (NEAMS) program within the US Department of Energy. Copyright: Copyright 2012 Elsevier B.V., All rights reserved.

PY - 2012/6

Y1 - 2012/6

N2 - Three-dimensional phase-field simulations of the growth and coalescence of intergranular bubbles in bicrystal grain geometries are presented. We investigate the dependency of bubble percolation on two factors: the initial bubble density and the bubble shape, which is governed by the ratio of the grain boundary energy over the surface energy. The simulations show that variations of each of these factors can lead to large discrepancies in the bubble coalescence rate, and eventual percolation, which may partially explain this observed occurrence in experimental investigations. The results presented here do not account for concurrent gas production and bubble resolution due to irradiation, therefore this simulation study is most applicable to post-irradiation annealing.

AB - Three-dimensional phase-field simulations of the growth and coalescence of intergranular bubbles in bicrystal grain geometries are presented. We investigate the dependency of bubble percolation on two factors: the initial bubble density and the bubble shape, which is governed by the ratio of the grain boundary energy over the surface energy. The simulations show that variations of each of these factors can lead to large discrepancies in the bubble coalescence rate, and eventual percolation, which may partially explain this observed occurrence in experimental investigations. The results presented here do not account for concurrent gas production and bubble resolution due to irradiation, therefore this simulation study is most applicable to post-irradiation annealing.

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JO - Journal of Nuclear Materials

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ER -

Phase-field simulation of intergranular bubble growth and percolation in bicrystals

Abstract

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