About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing Modeling, Simulation and Machine Learning
|
Presentation Title |
The Impact of Beam Shaping on Grain Morphology and Mechanical Response of Additively Manufactured Microstructures |
Author(s) |
Daniel Moore, Giovanni Orlandi, Sergio Turteltaub, Theron Rodgers, Daniel Moser, Fadi Abdeljawad |
On-Site Speaker (Planned) |
Daniel Moore |
Abstract Scope |
Gaussian laser beams, typically used as an energy input source in metal additive manufacturing (AM), result in large thermal gradients and melt pool-related defects, affecting the quality of AM microstructures. Recent studies suggest using alternative beam profiles, such as ring and Bessel beams, to overcome these issues and enhance process control. However, the impact of these beam profiles on thermal fields and grain microstructures remains unexamined. We employ a newly developed coupled thermal transport-microstructure Monte Carlo model to demonstrate that ring and Bessel beams expand the AM processing windows, enabling faster processing times. Subsequently, AM builds produced using diverse scan patterns are used to illustrate contrasting grain morphologies induced by different beam types. Multi-scale modeling is applied to the resulting builds to evaluate the changes in overall mechanical properties due to laser beam shaping. Our work underscores the potential for improved AM processing control by utilizing non-traditional beam profiles. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Mechanical Properties, Other |