About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Computational Thermodynamics and Kinetics
|
| Presentation Title |
Multiphase-Field Modelling of Thermo-Chemo-Mechanically Coupled Microstructural Processes in Materials |
| Author(s) |
Daniel Schneider, Thea Kannenberg, Andreas Prahs, Britta Nestler |
| On-Site Speaker (Planned) |
Daniel Schneider |
| Abstract Scope |
Computational models based on the multiphase-field method have become an indispensable tool in material science and physics in order to investigate materials with complex microstructures. For coupling with thermo-mechanical processes, such as those involved in additive manufacturing, it is essential to calculate thermo-chemo-mechanical configuration forces in a thermodynamically consistent manner. In this work, we present a thermodynamically consistent multiphase-field model for thermo-chemo-mechanically driven phase transformation processes. A mechanical model based on the mechanical jump conditions on singular surfaces is coupled with a thermodynamically consistent multi-phase field approach for diffusive phase transformation processes. The approach uses a diffuse interface formalism that accounts for curvature effects and recovers the sharp interface solutions, and allows the incorporation of CALPHAD-based parameters to represent a quantitative chemical driving force. In addition, the difference and impact between thermomechanical coupled and weakly coupled theory is discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Additive Manufacturing, Phase Transformations |