|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Frontiers in Solidification Science and Engineering
||Effect of Interphase Boundary Anisotropy on Three-phase Eutectic Microstructures
||Samira Mohagheghi, Melis Serefoglu
|On-Site Speaker (Planned)
In Jackson and Hunt theory on eutectic growth, one of the main assumptions is that α/β interface is parallel to the growth direction, <I>i.e.</I> the absence of anisotropy in the surface free energy of interphase boundaries. This assumption is not valid for most of the eutectic systems. Indeed, the impact of anisotropy on microstructure is vital and particularly complex in multiphase systems where multiple crystals and boundaries are present.
In this work, we present the effect of interphase boundary anisotropy on the dynamics of eutectic grain growth using <I>in-situ</I> directional solidification (DS) and rotating directional solidification (RDS) techniques and In-Bi-Sn ternary eutectic system. It is shown that while lamellar ABAC pattern is preserved during RDS of an isotropic eutectic grain, both the phase arrangement and the morphologies of phases could be altered in the presence of interphase boundary anisotropy.
||Planned: Supplemental Proceedings volume