About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
|
Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
|
Presentation Title |
Computational Studies of Solidification Kinetics in Multicomponent Alloys |
Author(s) |
Yitao Wang, Fadi Abdeljawad |
On-Site Speaker (Planned) |
Yitao Wang |
Abstract Scope |
Recent advances in additive manufacturing (AM) techniques have highlighted the need to understand nonequilibrium effects during the solidification of multicomponent metallic alloys. Specifically, during rapid solidification, solute trapping affects microstructure development and, as a result, the properties of AM alloys. However, solidification kinetics in multicomponent alloys remains poorly understood. In this work, using the finite interface dissipation phase field model, we investigate solidification dynamics in ternary alloys, used as a model system with multicomponent effects. Analytical and computational studies are used to systematically explore the impact of various mass transport coefficients and nonequilibrium effects on solidification rates. It is shown that cross diffusion coefficients and nonequilibrium interfacial effects play significant roles in solidification rates and solute redistribution across the advancing solid-liquid interface. Our work provides avenues to design multicomponent AM alloys with tailored microstructures. |