A phase field model for a geometrical description of micropores constrained by a solid network

Felberbaum, M. and Jacot, A. (2009). A phase field model for a geometrical description of micropores constrained by a solid network. In: Steve L. Cockcroft and Daan M. Maijer, Modeling of casting, welding, and advanced solidification processes XII : Proceedings from the twelfth International Conference on Modeling of Casting, Welding, and Advanced Solidification Processes. 12th International Conference on Modeling of Casting, Welding, and Advanced Solidification Processes, Vancouver, Canada, (369-376). 7 - 14 June 2009.

Author Felberbaum, M.
Jacot, A.
Title of paper A phase field model for a geometrical description of micropores constrained by a solid network
Conference name 12th International Conference on Modeling of Casting, Welding, and Advanced Solidification Processes
Conference location Vancouver, Canada
Conference dates 7 - 14 June 2009
Proceedings title Modeling of casting, welding, and advanced solidification processes XII : Proceedings from the twelfth International Conference on Modeling of Casting, Welding, and Advanced Solidification Processes
Journal name Modeling of Casting, Welding, and Advanced Solidification Processes - Xii
Place of Publication Warrendale, PA, United States
Publisher TMS
Publication Year 2009
Sub-type Fully published paper
ISBN 9780873397421
0873397428
Editor Steve L. Cockcroft
Daan M. Maijer
Volume 12
Start page 369
End page 376
Total pages 8
Language eng
Abstract/Summary A 2D phase field model has been developed to describe the shape of a pore formed within interdendritic liquid channels. The influence of the solid, which can force the pore to adopt a non-spherical shape, is taken into account through the geometry of the domain and appropriate boundary conditions. The results show that the presence of solid can substantially influence the volume and pressure of the pore. A pore constrained to grow in narrow liquid channels exhibits a substantially higher mean curvature, a larger pressure and a smaller volume as compared with a pore grown under unconstrained conditions. The effect of pore pinching by the solid network was also evidenced by 3D characterization of a pore by X-ray tomography. These measurements showed high interface curvatures corresponding to an overpressure of more than 400 kPa.
Keyword Aluminum
Phase field modeling
Pore pinching
Porosity
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Non-UQ

 
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Created: Fri, 21 Oct 2011, 23:42:57 EST by Viviane Victoria Crosthwaite on behalf of Faculty Of Engineering, Architecture & Info Tech