Stability of grain boundary texture during isothermal grain growth in UO2 considering anisotropic grain boundary properties
Hallberg, Håkan LU
and Zhu, Yaochan
LU
(2015)
In Journal of Nuclear Materials
465.
p.664-673
- Abstract
- In the present study, mesoscale simulations of grain growth in UO2 are performed using a 2D level set representation of the polycrystal grain boundary network, employed in a finite element setting. Anisotropic grain boundary properties are considered by evaluating how grain boundary energy and mobility varies with local grain boundary character. This is achieved by considering different formulations of the anisotropy of grain boundary properties, for example in terms of coincidence site lattice (CSL) correspondence. Such modeling approaches allow tracing of the stability of a number of characteristic low-Σ boundaries in the material during grain growth. The present simulations indicate that anisotropic grain boundary properties have... (More)
- In the present study, mesoscale simulations of grain growth in UO2 are performed using a 2D level set representation of the polycrystal grain boundary network, employed in a finite element setting. Anisotropic grain boundary properties are considered by evaluating how grain boundary energy and mobility varies with local grain boundary character. This is achieved by considering different formulations of the anisotropy of grain boundary properties, for example in terms of coincidence site lattice (CSL) correspondence. Such modeling approaches allow tracing of the stability of a number of characteristic low-Σ boundaries in the material during grain growth. The present simulations indicate that anisotropic grain boundary properties have negligible influence on the grain growth rate. However, considering the evolution of grain boundary character distribution and the grain size distribution, it is found that neglecting anisotropic boundary properties will strongly bias predictions obtained from numerical simulations. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/7524924
- author
- Hallberg, Håkan
LU
and Zhu, Yaochan
LU
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Coincidence site lattice, Grain boundary energy, Level set, Modeling, Simulation, Grain growth, Uranium dioxide
- in
- Journal of Nuclear Materials
- volume
- 465
- pages
- 664 - 673
- publisher
- Elsevier
- external identifiers
-
- wos:000364890300081
- scopus:84937597830
- ISSN
- 0022-3115
- DOI
- 10.1016/j.jnucmat.2015.06.052
- language
- English
- LU publication?
- yes
- id
- 11616abe-df78-4e45-b0c6-fe1e88831cc5 (old id 7524924)
- date added to LUP
- 2016-04-01 11:06:14
- date last changed
- 2022-04-12 20:27:13
@article{11616abe-df78-4e45-b0c6-fe1e88831cc5,
abstract = {{In the present study, mesoscale simulations of grain growth in UO2 are performed using a 2D level set representation of the polycrystal grain boundary network, employed in a finite element setting. Anisotropic grain boundary properties are considered by evaluating how grain boundary energy and mobility varies with local grain boundary character. This is achieved by considering different formulations of the anisotropy of grain boundary properties, for example in terms of coincidence site lattice (CSL) correspondence. Such modeling approaches allow tracing of the stability of a number of characteristic low-Σ boundaries in the material during grain growth. The present simulations indicate that anisotropic grain boundary properties have negligible influence on the grain growth rate. However, considering the evolution of grain boundary character distribution and the grain size distribution, it is found that neglecting anisotropic boundary properties will strongly bias predictions obtained from numerical simulations.}},
author = {{Hallberg, Håkan and Zhu, Yaochan}},
issn = {{0022-3115}},
keywords = {{Coincidence site lattice; Grain boundary energy; Level set; Modeling; Simulation; Grain growth; Uranium dioxide}},
language = {{eng}},
pages = {{664--673}},
publisher = {{Elsevier}},
series = {{Journal of Nuclear Materials}},
title = {{Stability of grain boundary texture during isothermal grain growth in UO2 considering anisotropic grain boundary properties}},
url = {{http://dx.doi.org/10.1016/j.jnucmat.2015.06.052}},
doi = {{10.1016/j.jnucmat.2015.06.052}},
volume = {{465}},
year = {{2015}},
}