About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Algorithm Development in Materials Science and Engineering
|
Presentation Title |
Analysis of Dendrite Growth and Microstructure Evolution during Solidification of Al 6061 via 2D and 3D Phase Field Models |
Author(s) |
Neil Bailey, Yung C. Shin |
On-Site Speaker (Planned) |
Yung C. Shin |
Abstract Scope |
A 3-dimensional (3D) phase field model is developed and used to predict dendrite growth and microstructure development during the laser welding processes of Al 6061 alloy. A 2D version of the model is used to validate the model using isothermal solidification of an Al-4wt.%Cu alloy to compare, with good agreement between dendrite growth velocity and overall morphology. The 3D model is then used to simulate dendrite growth and microstructure development in a laser welding process using Al 6061. By using a validated, comprehensive laser welding model to calculate the complex and strongly transient temperature field, the predicted 2D cross-sections of the 3D simulated microstructure are compared with micrographs from an experimental workpiece as well as 2D simulated results. The 2D cross-sections taken from the 3D simulation results match well with the experimental micrographs and they are a better prediction of dendrite growth and solidification microstructure than the 2D simulation results. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, ICME, Joining |