About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Frontiers in Solidification: An MPMD Symposium Honoring Jonathan A. Dantzig
|
Presentation Title |
Computational Models of Microstructure and Thermal Distortion during Initial Solidification of Steel |
Author(s) |
Brian G. Thomas, Ghavam Azizi, Mohsen Asle Zaeem |
On-Site Speaker (Planned) |
Brian G. Thomas |
Abstract Scope |
The initial stages of solidification are of vital importance to the surface quality of cast metal products. In this work, computational models of initial solidification are applied to investigate solidification microstructure and thermal distortion during initial solidification of steel during continuous casting. A phase field model of columnar dendrite growth is applied to investigate the effect of steel grade during initial solidification of low-carbon steel with manganese and silicon. A finite-element model including non-linear temperature-, phase-, and carbon-content-dependent elastic-viscoplastic constitutive equations is applied to study the effect of steel grade and interfacial heat flux on thermal distortion of a solidifying steel droplet. These fundamental models are validated with measurements and provide new insights into the phenomena which govern initial solidification. Of particular interest is the quantitative prediction of deeper depressions in ultra-low carbon and peritectic steels, which lead to cracks and other surface defects in the commercial process. |
Proceedings Inclusion? |
Planned: |
Keywords |
Iron and Steel, Solidification, Modeling and Simulation |