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The dissimilar full depth laser-butt welding of low carbon steel and austenitic steel AISI 316 was investigated using CW 1.5kW CO 2 laser. The effect of laser power (1.1–1.43kW), welding speed (25–75cm/min) and focal point position (−0.8 to −0.2mm) on the weld-bead geometry (i.e. weld-bead area, A; upper width, W u ; lower width, W l and middle width, W m ) and on the...
This paper presents an experimental design approach to process parameter optimization for the laser welding of martensitic AISI 416 and AISI 440FSe stainless steels in a constrained overlap configuration in which outer shell was 0.55mm thick. To determine the optimal laser-welding parameters, a set of mathematical models were developed relating welding parameters to each of the weld characteristics...
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