Welding of Austenitic Stainless Steel AISI 304 by Fiber Laser

Abstract:

Paper deals with the welding of AISI 304 thin sheets with the thickness of 1 mm by fiber laser. Statistical software MiniTab was used for planning the experiment. The influence of laser power, welding speed and focal point position on width and depth of weld bead was examined. Output power, welding speed and focus point position were used as variable factors for DOE. Samples were prepared by standard metallography. Weld bead width and depth were evaluated. Statistical results were afterward verified by welding reference samples with material the thickness of 0.25 mm. The difference between real width of weld bead and predicted width obtained from statistical software was 8.26 %. In case of weld depth measurement, the difference was 23 %.

• Periodical: Materials Science Forum (Volume 891)
• Pages: 190-194
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.891.190
• Online since: March 2017
• Authors: Katarína Bártová, Mária Dománková, Jozef Bárta
• Keywords: Austenitic Stainless Steel, DOE, Fiber Laser, Welding

References

[1] N. Parvathavarthini, R.K. Dayal. Influence of chemical composition, prior deformation and prolonged thermal aging on the sensitization characteristics of austenitic stainless steels, Journal of Nuclear Materials 305 (2002) 209-219.

DOI: 10.1016/s0022-3115(02)00915-7

[2] N. Parvathavarthini, R.K. Dayal, J.B. Gnanamoorthy, Influence of prior deformation on sensitization of AISI type 316LN stainless steel, Journal of Nuclear Materials 208 (1994) 209-219.

DOI: 10.1016/0022-3115(94)90334-4

[3] V. Magula, J. Liao, K. Ikeuchi, T. Kuroda, Y. Kikuchi, F. Matsuda, New aspects of sensitization behaviour in recent 316 type austenitic stainless steels, Trans. JWRI 25 (1996) 49-58.

[4] P. Záhumenský, S. Tuleja, J. Országová, J. Janovec, V. Siládiová, Corrosion resistance of 18Cr-12Ni-2, 5Mo steel annealed at 500-1050°C, Corrosion Science 41 (1999) 1305-1322.

DOI: 10.1016/s0010-938x(98)00185-1

[5] U. Reisgen, M. Schleser, O. Mokrov, E. Ahmed, Statistical modeling of laser welding of DP/TRIP steel sheets, Optics &Laser Technology 44 (2012) 92-101.

DOI: 10.1016/j.optlastec.2011.05.025

[6] E. Koleva, Statistical modelling and computer programs for optimalization of the electron beam welding of stainless steel, Vacuum 62 (2001) 151-157.

DOI: 10.1016/s0042-207x(01)00274-3

[7] E. Koleva, Electron beam weld parameters and thermal efficiency improvement, Vacuum 77 (2005) 413-421.

DOI: 10.1016/j.vacuum.2004.09.002

[8] K. Y Benyounis, A.G. Olabi, M.S.J. Hashmi, Effect of laser welding parameters on the heat input and weld-bead profile, Journal of Materials Processing Technology 164-165 (2005) 978–85.

DOI: 10.1016/j.jmatprotec.2005.02.060

[9] K. Manonmani, N. Nurugan, G. Buvanasekaran, Effects of process parameters on the bead geometry of laser beam butt welded stainless steel sheets, International Journal of Advanced Manufacturing Technology 44 (2007) 1125-33.

DOI: 10.1007/s00170-006-0432-7