Abstract
The objective of this study is to quantify the melt pool dynamics during continuous wave laser remelting of a Co-Cr alloy manufactured using selective laser melting. This knowledge will inform process improvement and numerical modeling of laser remelting. A high-intensity X-ray beam imaged a 2 mm × 0.5 mm area of the surface with a 50 kHz framerate. Analysis of these videos quantified the melt pool surface wave movement and compared this to the initial surface features. The results indicate that the keyhole and its characteristic oscillations can suppress large wavelength features on the initial surface.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 229-232 |
| Number of pages | 4 |
| Journal | CIRP Annals |
| Volume | 68 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2019 |
Funding
This work was supported by National Science Foundation (NSF) grant CMMI-1727366 , NSF-supported shared facilities at UW-Madison , and Deutsche Forschungsgemeinschaft grant 386371584 . This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. The authors thank Cang Zhao, Alex Deriy, and Kamel Fezzaa for their assistance with the beamline experiment. This work was supported by National Science Foundation (NSF) grant CMMI-1727366, NSF-supported shared facilities at UW-Madison, and Deutsche Forschungsgemeinschaft grant 386371584. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. The authors thank Cang Zhao, Alex Deriy, and Kamel Fezzaa for their assistance with the beamline experiment.
Keywords
- Laser
- Selective laser melting (SLM)
- X-ray imaging
ASJC Scopus subject areas
- Mechanical Engineering
- Industrial and Manufacturing Engineering