About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Frontiers in Solidification: An MPMD Symposium Honoring Jonathan A. Dantzig
|
Presentation Title |
N-14: Modelling Three-dimensional Microstructure Solidification Incorporating Interdependent Structural Mechanisms |
Author(s) |
Peter Soar, Andrew Kao, Georgi Djambazov, Koulis Pericleous |
On-Site Speaker (Planned) |
Andrew Kao |
Abstract Scope |
The development of solidifying dendritic microstructures can be significantly altered by interdependent structural mechanisms. Many experimental results have demonstrated this phenomenon, where dendrites can bend or twist significantly, acts as a key factor in the formation of defects in cast parts such as stray grains and slivers. Despite this, mechanical effects are often neglected when modelling the microstructure solidification process, with the few attempts presented in the literature being limited to two dimensional models which by necessity must ignore a wide variety of complex deformation behaviours. A three-dimensional Finite Volume Structural Mechanics Solver has been developed which uses displacements to alter the preferential growth orientation of the dendrites, intimately coupling structural mechanics to microstructure solidification within a larger modelling framework also capable of simulating fluid flow and electromagnetism. Example simulations investigating fundamental mechanisms which lead to the formation of casting defects will be presented with reference to observed experimental results. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Computational Materials Science & Engineering, Solidification |