|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Phase Transformation Modeling of Technical Al Alloy during Solidification
||Jiwon Park, Chang-Seok Oh
|On-Site Speaker (Planned)
Since the material properties of Al alloys strongly depend on their microstructure, it is important to simulate microstructural evolution under process conditions in materials design. In a technical Al alloy containing Mn and Fe, its mechanical property is determined by distributions of Mn around FCC dendrite and faceted Al6Mn precipitates. The shape and size of the precipitates are altered by the alloy chemistry, and the presence of external mixing; these factors influence on the kinetics via anisotropic nature of the precipitate. In this project, the microstructural evolution of Al-Mn-Fe alloy containing trace amounts of Si and Ti during solidification is simulated in phase-field approach. Precipitate distribution, dendrite shape, and elemental segregation under different cooling rate are examined and compared with experimental results which showing good agreement.
||Planned: Supplemental Proceedings volume