|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Applications of Solidification Fundamentals
||Pattern Formation during Directional Solidification of the Ternary Eutectic Alloy Al-Ag-Cu under Influence of Velocity Changes
||Johannes Hötzer, Philipp Steinmetz, Michael Kellner, Anne Dennstedt, Amber Genau, Britta Nestler
|On-Site Speaker (Planned)
During the directional solidification of ternary eutectic alloys a wide range of different patterns in the microstructure form. These patterns directly influence the later mechanical properties of the component. Especially the effect of changing process conditions on the microstructure evolution is of high industrial and scientific interest. To investigate the microstructure evolution in 3D, large scale and massive parallel phase-field simulations based on the Grand potential approach are conducted. For the ternary eutectic system Al-Ag-Cu the pattern formation is studied, applying different but constant velocities. The results show a good visual and quantitative accordance with experimental micrographs. Subsequently the effect of velocity changes on the evolving microstructure is investigated and compared to experimental results from 3D synchrotron tomography. The microstructure is analyzed over the growth height with statistical methods and a novel approach based on a graph analysis is applied.
||Planned: Supplemental Proceedings volume