About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing Modeling, Simulation and Machine Learning
|
Presentation Title |
F-14: A Multi-scale Modelling Approach for Wire-based Laser Metal Deposition Process |
Author(s) |
Prashant Shriram Jadhav, Hugh Banes, Hector Basoalto-Ibarra, Magnus Anderson |
On-Site Speaker (Planned) |
Prashant Shriram Jadhav |
Abstract Scope |
The Laser Metal Deposition wire-based process is renowned for high deposition rates and suitability for large-scale component manufacturing. However, the increased thermal gradients lead to residual stress generation, process-induced cracking, and complex microstructural transformations. This work introduces a multi-scale process modelling approach aimed at linking the process-property relationships. The approach connects process variables to the microstructure and properties, thus aiding in the development of certification and lifing methods for additively manufactured components. The modelling work is based on accurately representing thermal fields using a heat source Finite element analysis (FEA) model. Further to predict the strengthening structures a Cellular Automaton (CA) based grain growth as well as JMAK based phase transitions model has been developed. The developed multi-scale modelling capability can generate mesoscale heterogeneous microstructures observed in real builds, further facilitating the implementation of a physics-based crystal plasticity model to determine location-specific component-level mechanical behaviour. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Modeling and Simulation, Solidification |