Description

Nickel (Ni) super alloys are widely used in industrial fields such as aerospace jet engines and nuclear power, since their excellent properties such as strength, weather resistance, and corrosion resistance. However, Ni super alloy is difficult to from the complicated design since, it is poor casting and machinability. The laser metal deposition (LMD) method, one of the additive manufacturing technologies, is useful way to coat on the several metal surface. In LMD process, metal powder supply and laser irradiation were simultaneously performed toward to the substrate to from a coating layer. Conventional LMD is employed a high-power laser, to form a large molten pool and fed to supply the coating powder in it. This process causes a large amount of dilution where substrate components get mixed into the coating layer. Thus, we have been developed the multi beam type LMD system with blue diode laser for reduction of dilution. In our previous study, the copper and WC-Co were coated on the SS304 surface, the layers with void-free and crack-fee were generated by multi beam type LMD. These materials have big differences of melting point between the substrate of SS304 and coating material, which is thought to have the effect of reducing dilution. In this study, we coated the SS304 with a Ni-based alloy that has a similar melting point by multi beam LMD with blue diode lasers, and it was clarified the effect of the difference in melting point on dilution.

Contributing Authors

  • Ryuhei Matsuda
    Grad. Sch. of Eng., Osaka Sangyo Univ.
  • Keisuke Takenaka
    Joining and Welding Research Institute, Osaka Univ.
  • Yuji Sato
    Joining and Welding Research Institute, Osaka Univ.
  • Mitsuhiro Kusaba
    Grad. Sch. of Eng., Osaka Sangyo Univ.
  • Masahiro Tsukamoto
    Joining and Welding Research Institute, Osaka Univ.
Ryuhei Matsuda
Grad. Sch. of Eng., Osaka Sangyo Univ.
Track: Laser Additive Manufacturing
Session: Poster Gallery
Day of Week: Tuesday
Date/Time:
Location: Hollywood Ballroom Foyer

Keywords

  • Additive Manufacturing
  • Blue Diode Laser
  • Laser Metal Deposition
  • Nickel Super Alloy