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Laser Cladding of Ti-6Al-4V Knife Edges

[+] Author Affiliations
Kartik Shanker, Jonathan Cuddy, Roy Willerton

Standard Aero, Ltd., Winnipeg, Manitoba, Canada

Paper No. GT2006-90930, pp. 1011-1016; 6 pages
doi:10.1115/GT2006-90930
From:
  • ASME Turbo Expo 2006: Power for Land, Sea, and Air
  • Volume 4: Cycle Innovations; Electric Power; Industrial and Cogeneration; Manufacturing Materials and Metallurgy
  • Barcelona, Spain, May 8–11, 2006
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4239-8
  • Copyright © 2006 by ASME

abstract

The effect of cladding of Ti-6Al-4V knife edges using wires and a CO2 laser power source was investigated. This method of cladding, in combination with conventional atmospheric shielding techniques, permits continuous deposition of thick (> 1mm) cladding of acceptable porosity and microstructural quality. The cladding width increased to 0.76–0.81mm irrespective of the knife edge width of 0.350–0.76mm. Continuous deposition of multiple layers was possible, at 0.125–0.150mm increase in thickness per pass, at part linear speeds as high as 762 mm/min. While the process is sensitive to practical considerations of wire feed, knife edge and laser alignment, no evidence of damage to the substrate from laser reflection was observed.

Copyright © 2006 by ASME

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