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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Algorithm Development in Materials Science and Engineering
Presentation Title Multi-scale Modeling of Solidification Microstructure during Powder Bed Fusion
Author(s) Ryan Lenart, Antonio Magana, Mohsen Eshraghi
On-Site Speaker (Planned) Mohsen Eshraghi
Abstract Scope Controlling solidification microstructure in additively manufactured metallic components can play a game-changing role in the way engineering components are designed and fabricated. However, experimental analysis of the melt pool is difficult because the size of the melt pool is very small and the heat source is moving very fast. A multi-scale model was developed to simulate the solidification microstructure in the melt pool of a powder bed fusion additive manufacturing process. A meso-scale thermo-fluid model was employed to simulate the molten pool geometry and dynamics. Then, the microstructural evolution was simulated by importing temperature data from the meso-scale model to a micro-scale model. The phase field method was used to model the evolution of the solidification microstructure while the lattice Boltzmann method was used to model solute transport in the liquid. The effect of process parameters on the resulting melt pool microstructure was studied.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

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