In this paper, an experimental and simulation analysis is undertaken on laser cladding of Stellite-6 on mild steel and HY80 substrates. A cladding system equipped with a coaxial powder nozzle was used to identify process parameters which would produce both favorable single-track and single-layer clads first on mild steel without the need to identify different process parameters on a per-track basis. Using the parameters from mild steel substrate cladding, a minimal amount of adjustment was shown to provide process parameters to clad Stellite-6 on HY80. Modeling of single-track clads of Stellite-6 on mild steel was performed to gain additional insight into the cladding process and was validated against two single-track conditions. It was shown that a significant amount of variability can exist in the clad geometry depending on the process parameters chosen; thus, the model provides an average portrayal of the process. Finally, based on parameter tuning during the process, cladding was found to be near-optimal when the laser beam diameter was approximately the same diameter as the powder waist diameter.
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The authors wish to acknowledge the financial support of this research by Naval Engineering Education Consortium (NEEC) NUWC IHEODTD (Grant #: N00174-17-2-0001). DISTRIBUTION A. Approved for public release: distribution unlimited. NUWC Keyport #19-018.
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Katinas, C., Throop, T., Shin, Y.C. et al. Laser cladding of Stellite-6 with a coaxial nozzle via modeling and systematic experimental investigations. Int J Adv Manuf Technol 113, 837–853 (2021). https://doi.org/10.1007/s00170-021-06624-3
- Laser cladding
- Laser direct deposition