|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Applications of Solidification Fundamentals
||Pattern Formation during the Directional Solidification of Ternary Eutectic Alloys and the Influence of the Average Front Undercooling
||Philipp Steinmetz, Johannes Hötzer, Michael Kellner, Britta Nestler
|On-Site Speaker (Planned)
During the directional solidification of ternary eutectic alloys, the three evolving solid phases form a wide range of different patterns, depending on the physical parameters, which strongly influence the mechanical properties of the component. To gain a better understanding of this pattern formation process in ternary eutectic alloys, phase-field simulations based on the minimization of the grand potential difference are used. Through a systematical variation of the simulation domain size, a dependence of the average front undercooling on the arising patterns can be demonstrated in 3D phase-field simulations of an ideal ternary eutectic system. The simulation results are in good quantitative accordance with a three dimensional, ternary eutectic Jackson-Hunt analysis. Also concentration variations in the melt and their influence on the arising patterns as well as the average front undercooling are studied with large-scale 3D phase-field simulations for the ternary eutectic system Al-Ag-Cu.
||Planned: Supplemental Proceedings volume