Laser welding of INCONEL 600

Giuseppe Daurelio; G. Dionoro; F. Memola Capece Minutolo

doi:10.1117/12.25961

1 February 1991 Laser welding of INCONEL 600

Giuseppe Daurelio, G. Dionoro, F. Memola Capece Minutolo

Proceedings Volume 1397, 8th Intl Symp on Gas Flow and Chemical Lasers; (1991) https://doi.org/10.1117/12.25961
Event: Eighth International Symposium on Gas-Flow and Chemical Lasers, 1990, Madrid, Spain

Abstract

Laser beam welding exhibits features typical of autogenous welding by fusion with very concentrated heat sources: narrow deep weld, restrict heat affected zone (HAZ), negligible residual.stresses etc. All these aspects are of great importance in welding special purpose alloys such as corrosion resistant nickel base alloys. In this work, a nickel base alloy INCONEL 600 has been welded by means of a 2 kW CO2 cw laser. In order to evaluate the influence of the basic welding parameters on heat affected zone, weld structure and weld geometry, an accurate analysis has been carried out. The experimental results show a strict correlation between the power beam and the welding speed vs. the weld bead geometry. As the speed increases, so penetration decays. Microhardness tests, micro and macrograph examinations did not reveal, in the range of experimental parameters, any significant alteration in weld bead structure nor the presence of a HAZ. In order to assess process efficiency, the experimental data were processed using the Line Source Model (LSM) which permits to calculate the Melting Ratio (MR) and Energy Transfer Efficiency (ETE).

Citation Download Citation

Giuseppe Daurelio, G. Dionoro, and F. Memola Capece Minutolo "Laser welding of INCONEL 600", Proc. SPIE 1397, 8th Intl Symp on Gas Flow and Chemical Lasers, (1 February 1991); https://doi.org/10.1117/12.25961

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