About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
Modeling of Spontaneous PE to OE Transition in Carbide Precipitation |
Author(s) |
Qing Chen, Kaisheng Wu, Johan Jeppsson, John Ågren, Paul Mason |
On-Site Speaker (Planned) |
Paul Mason |
Abstract Scope |
The mixing of fast and slow diffusers leads to fascinating ortho-equilibrium (OE), para-equilibrium (PE), and non-partitioning local equilibrium (NPLE) solid phase transformations in steels. The natural transition between these phase transformations is even more intriguing and its theoretical treatment and modeling are challenging. In this work, we developed a simple model capable of dealing with the spontaneous PE to OE transition in simulating carbide precipitation in steels. The model has been implemented in TC-PRISMA, a computational tool to treat concurrent nucleation, growth, and coarsening of multiple-phase precipitates in multicomponent alloy systems. TC-PRISMA is available as a module in the Thermo-Calc Software package and has direct access to thermodynamic and kinetic databases developed for various kinds of alloys over decades. The proposed model has been applied to simulate the precipitation of cementite during the tempering of steels. A few case studies will be shown and discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Phase Transformations, Other |