Influence of solid-solid interface anisotropy on three-phase eutectic growth during directional solidification
1 Karlsruhe Institute of Technology (KIT) - Haid-und-Neu-Str.7, DE-76131 Karlsruhe, Germany, EU
2 Indian Institute of Technology Bombay - Mumbai-400076, India
Received: 8 October 2012
Accepted: 2 January 2013
We utilize a quantitative phase-field model to simulate three-phase eutectic growth and the oscillatory instabilities at large spacings. We analyze the effect of symmetry in the selection of the oscillatory mode for the case of directional solidification. Going further from our previous article (Choudhury A. et al., Phys. Rev. E, 83 (2011) 051608), we manipulate the symmetry elements in a given configuration through the use of solid-solid anisotropy. Characteristic modes are compared between the case of isotropic surface energies and those retrieved in the presence of solid-solid anisotropy. We end with certain general arguments with regards to the growth rate of oscillatory modes and symmetry elements of the obtained microstructure depending on the symmetry elements of the starting configuration.
PACS: 68.35.-p – Solid surfaces and solid-solid interfaces: structure and energetics / 64.70.D- – Solid-liquid transitions / 81.30.Fb – Solidification
© EPLA, 2013