About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
A-11: A New Cellular Automaton Model for Simulating the Formation of Aluminum Microstructure in Laser Powder Bed Fusion Process |
Author(s) |
Michael P. Moodispaw, Buwei Chen, Qiqui Wang, Andy L Wang, Alan A. Luo |
On-Site Speaker (Planned) |
Michael P. Moodispaw |
Abstract Scope |
Additive manufacturing (AM) processes, such as laser powder bed fusion (LPBF), have been extensively researched and are increasingly being used in industrial applications. Since the mechanical properties of LPBF parts are determined by solidification microstructure and defect population, accurate microstructure prediction is required for AM product development and process optimization. In this study, a new cellular automaton model was developed to simulate the solidification of aluminum grain structure in the LPBF process. Thermal diffusion was calculated to determine the local undercooling, which is the driving force for grain structure nucleation and growth in the model. The simulation results were compared to the microstructure of LPBF samples of Al-10Si-Mg alloy with specified process conditions. The new model provides quantitative and visual understandings of the effects of various processing conditions, such as laser scan speed, on the solidification structure of AM products. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Solidification, Modeling and Simulation |