About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Melt Processing, Casting and Recycling
|
| Presentation Title |
Simulation of Centerline Segregation in AA 8011 During Twin-Roll Casting |
| Author(s) |
Renan Tavares Ruy, Tiago Nunes Lima, Luis Fernando Folle, Lucas Salomão Peres |
| On-Site Speaker (Planned) |
Renan Tavares Ruy |
| Abstract Scope |
A numerical simulation of the continuous twin-roll casting (TRC) process for AA 8011 aluminum alloy was conducted to investigate the formation of centerline segregation, a critical defect known to impair downstream formability and mechanical properties. The study utilized a 3D thermo-fluid model in ProCAST®, with essential temperature-dependent material properties, such as phase evolution, calculated by the CompuTherm software package. For predictive accuracy, the model was carefully calibrated against experimental data from an industrial casting line. Following validation, a parametric sensitivity analysis quantified the influence of key variables on the defect. The investigation focused on five variations in alloy chemistry (specifically the Fe:Si ratio), two different interfacial heat transfer coefficients (IHTC), and two mushy zone permeability models that govern interdendritic fluid flow. Results conclusively demonstrated that the alloy's chemical composition, particularly the Fe:Si ratio, is the dominant factor, controlling the type and morphology of iron-bearing intermetallic phases that precipitate during solidification. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Solidification, Process Technology |