3D grain growth simulation and experimental verification in laser beam melting of IN718

Conference contribution
(Conference Contribution)


Publication Details

Author(s): Köpf J, Rasch M, Meyer A, Markl M, Schmidt M, Körner C
Publication year: 2018
Conference Proceedings Title: Procedia CIRP 74 (2018)
Pages range: 82–86
Language: English


Abstract

A predictive grain structure model originally used for selective electron beam melting (SEBM) is adapted to laser beam melting (LBM). Single lines with varying welding speeds were molten in a base plate made of polycrystalline IN718. The heat input is calculated with an analytical heat source model and the resulting melt pool geometry is compared with micrographs and high-speed camera shots. A typical welding microstructure is predicted by the grain growth model and confirmed with Electron Backscatter Diffraction (EBSD) measurements. With increasing line energies, a rising fragmentation of the grains is observed. This phenomenon is explained by an analyzation of the thermal gradients at the time of solidification of the grains.


FAU Authors / FAU Editors

Köpf, Johannes
Sonderforschungsbereich 814/3 Additive Fertigung
Körner, Carolin Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Markl, Matthias Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Meyer, Andreas
Zentralinstitut für Neue Materialien und Prozesstechnik
Rasch, Michael
Sonderforschungsbereich 814/3 Additive Fertigung
Schmidt, Michael Prof. Dr.-Ing.
Lehrstuhl für Photonische Technologien


Research Fields

Additive Manufacturing
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Modelling and Simulation
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)


How to cite

APA:
Köpf, J., Rasch, M., Meyer, A., Markl, M., Schmidt, M., & Körner, C. (2018). 3D grain growth simulation and experimental verification in laser beam melting of IN718. In Procedia CIRP 74 (2018) (pp. 82–86). Fürth, DE.

MLA:
Köpf, Johannes, et al. "3D grain growth simulation and experimental verification in laser beam melting of IN718." Proceedings of the 10th CIRP Conference on Photonic Technologies (LANE 2018), Fürth 2018. 82–86.

BibTeX: 

Last updated on 2018-16-11 at 12:53