Laser Welding Of Thin Sheet Of AISI 301 Stainless Steel

R. Vilar; R. M. Miranda

doi:10.1117/12.968904

16 January 1988 Laser Welding Of Thin Sheet Of AISI 301 Stainless Steel

R. Vilar, R. M. Miranda

Proceedings Volume 0952, Laser Technologies in Industry; (1988) https://doi.org/10.1117/12.968904
Event: Laser Technologies in Industry, 1988, Porto, Portugal

Abstract

Preliminary results of an investigation on laser welding of AISI 301 stainless steel thin sheet are presented. Welds were made with a CO₂ continuous wave laser, varying power density and welding speed. The welds were studied by optical and electron scanning microscopy, X-ray diffraction and hardness tests. Experimental results show that under appropriate conditions, sound welds are obtained, with a negligeable heat affected zoneanda fine microstructure in the fusion zone. The fusion zone shows a cellular - dendritic microstructure, with austenite and ferrite as the major constituents. Ferrite, whose content is 5 to 7%, is predominantly intradendritic with both vermicular and acicular morphologies. However some interdendritic ferrite may also be present. The characteristics of the structure suggest that the solidification mode of AISI 301 stainless steel is essentially ferritic.

Citation Download Citation

R. Vilar and R. M. Miranda "Laser Welding Of Thin Sheet Of AISI 301 Stainless Steel", Proc. SPIE 0952, Laser Technologies in Industry, (16 January 1988); https://doi.org/10.1117/12.968904

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