About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
Simulation of Microstructures Produced by Laser Powder Bed Fusion |
Author(s) |
Theophile Camus, Daniel Maisonnette, Oriane Baulin, Oriane Senninger, Gildas Guillemot, Charles-Andre Gandin |
On-Site Speaker (Planned) |
Charles-Andre Gandin |
Abstract Scope |
In laser powder bed fusion, the solidification microstructure is formed due to both epitaxial grain growth and nucleation. The structure has a strong influence on the final mechanical properties of parts and is influenced by process parameters such as the laser power and velocity as well as the scanning strategy. The prediction of this microstructure is of prime interest considering the distribution of size, crystallographic orientation and shape of the grains. The cellular automaton method is used to investigate microstructure formation applied to a nickel-base superalloy. The steady state thermohydraulic behavior at the scale of the melt pool is analyzed and used to compute the development of the grain structure. This structure is computed at the scale of a representative volume for several scanning strategies including meander with interlayer rotation 0°, 67° and 90° as well as stripes. Results are intended as an input to the simulation of thermomechanical behavior. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Solidification, Modeling and Simulation |