The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Investigation of faceted void morphologies in UO2 by phase field modelling

På svenska

Author

Summary, in English

In the present study a phase field model for high surface energy anisotropy is developed to model the morphologies of voids in UO2. In order to precisely account for the high anisotropy, an alternative forward-backward strategy based on a staggered grid with an averaged interface normal scheme is used in the numerical procedure. A variety of equilibrium void shapes are reproduced with respect to a constant volume condition. The facet areas and facet energies are calculated. The simulations show excellent agreement with the analytic predictions obtained through Wulff constructions. For the void shapes with high Miller index facets, it is discovered that a slight decrease in total surface area will result in a substantial increase in the total surface energy.

Department/s

Publishing year

2015

Language

English

Pages

113-120

Publication/Series

Journal of Nuclear Materials

Volume

467

Issue

Part 1

Document type

Journal article

Publisher

Elsevier

Topic

  • Other Materials Engineering

Keywords

  • Phase field UO2 Voids Anisotropy Surface energy

Status

Published

Research group

  • Materials@LU

ISBN/ISSN/Other

  • ISSN: 0022-3115