| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
A-130: Numerical Prediction of Microstructures by a Coupled Model (CA-FE) for Laser Beam Melting of Single-track 316L Stainless Steel |
| Author(s) |
Anaïs Baumard, Danièle Ayrault, Olivier Fandeur, Anne-Laure Vételé, Cyril Bordreuil, Frédéric Deschaux-Beaume |
| On-Site Speaker (Planned) |
Anaïs Baumard |
| Abstract Scope |
Laser Beam Melting (LBM) refers to an additive manufacturing process that enables the realization of objects from powder melted by a laser beam. Additive processes offer advantages (manufacturing time and losses reductions, fabrication of complex geometries). Nevertheless, the fusion process occurs during high-speed laser scanning and so generates anisotropic microstructures, influencing the mechanical properties. Therefore, solidification modeling is required for a better understanding of grain formation during LBM. In this work, the numerical modeling used for this purpose, based on a three-dimensional “CAFE” model, is presented. It couples Cellular Automaton (CA) simulating the solidification of 316L stainless steel, and Finite-Element (FE) providing temperature fields. The numerical modeling of the process is based on experimentations and is being validating comparing numerical and simulated thermal fields, shape and size of the molten zone. To conclude, a cellular domain is defined to investigate grain structure predictions that are compared with some EBSD results. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |