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.
Effect of Pulse Duty Cycle on Inconel 718 Laser Welds
Sae Technical Papers
Aerospace Technology Conference and Exposition ; 1989
1989-09-01
Conference paper
English
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