About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
|
Symposium
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Physical Modeling
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Presentation Title |
Modeling the Effects of Coordinated Multi-beam Laser Powder Bed Fusion on Melt Pool Geometry and Solidification Microstructure |
Author(s) |
Rachel Tullis, Joy Gockel |
On-Site Speaker (Planned) |
Rachel Tullis |
Abstract Scope |
The laser powder bed fusion (LPBF) additive manufacturing (AM) process is beneficial for many reasons; however, it is limited by the solidification thermal conditions achievable in the available processing parameter ranges for single-beam processing methods. The addition of multiple heat sources has the potential to provide better control over the thermal conditions, thus providing better control of the microstructure of AM parts. This work investigates the effects of adding multiple, coordinated heat sources to the LPBF process. To do this, existing thermal models of LPBF have been modified to predict the thermal effects of two coordinated heat sources. These computational models are used to calculate melt pool dimensions and thermal conditions due to the coordinated multi-beam scan strategy. The predictive method used in this research provides insight into the effects of using multiple coordinated beams in LPBF, which is a necessary step in increasing the capabilities of the AM process. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |