Effect of Pulse Duty Cycle on Inconel 718 Laser Welds

Paper #:
  • 892299

Published:
  • 1989-09-01
Citation:
McCay, M., McCay, T., Dahotre, N., Sharp, C. et al., "Effect of Pulse Duty Cycle on Inconel 718 Laser Welds," SAE Technical Paper 892299, 1989, https://doi.org/10.4271/892299.
Pages:
12
Abstract:
Crack sensitive Inconel 718 was laser pulse welded using a 3.0 kW CO2 laser. Weld shape, structure and porosity were recorded as a function of the pulse duty cycle. Within the matrix studied, the welds were found to be optimized at a high (17 ms on, 7 ms off) duty cycle. These welds were superior in appearance and lack of porosity to both low duty cycle and CW welds.
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