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

Beitrag bei einer Tagung
(Konferenzbeitrag)


Details zur Publikation

Autor(en): Köpf J, Rasch M, Meyer A, Markl M, Schmidt M, Körner C
Jahr der Veröffentlichung: 2018
Tagungsband: Procedia CIRP 74 (2018)
Seitenbereich: 82–86
Sprache: Englisch


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-Autoren / FAU-Herausgeber

Köpf, Johannes
Sonderforschungsbereich 814 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 Additive Fertigung
Schmidt, Michael Prof. Dr.-Ing.
Lehrstuhl für Photonische Technologien


Zitierweisen

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: 

Zuletzt aktualisiert 2018-16-11 um 12:53