Effect of Viscosity on the GTA Welds Bead Penetration in Relation with Surface Tension Elements
Abstract
The aim of this paper is to study the effect of the viscous dissipation on the surface tension and its role on the shape of weld pool. Experiments were conducted on four different casts of ferritic stainless steel with different content in the sulfur and titanium. The results show in particular that the presence of titanium solid compounds affects the role of sulfur as surfactant element. Titanium in the presence of carbon and oxygen, titanium forms solid compounds which affect the Marangoni convection due to the sulfur element in the weld pool. The viscous dissipation due to these compounds alters the flow rate of the molten metal. We expect that the viscosity of metal liquid was altered by these solid compounds. The viscous dissipation due to these compounds contributes to heat the molten metal leading to larger weld bead.
Keywords:
GTA welding, Marangoni, viscosity, ferritic stainless steel, solid compounds, hardnessDownloads
References
C. R. Heiple, J. R. Roper, “Mechanism for minor element effect on GTA fusion zone geometry", Welding Research, Vol. 61, No. 4, pp. 97-102, 1982
C. R. Heiple, J. R. Roper, “Interaction between impurities and welding variables in determining GTA weld shape", Welding Journal, Vol. 65, No. 6, pp. 150-155, 1986
S. Marya, A. Shahab, K. Touileb, “Effect of minor chemistry elements on pulsed gas tungsten arc weld profiles”, Welding, Joining, Coating and Surface Modification in Advanced Materials (Proc. Pre-Assem. Symp. of 47th IIW Ann. Assem.), Dalian, China, pp. 91-97, 1994
S. Marya, K. Touileb, J. Binard, “Effect of minor chemistry variations on the laser melts profiles of two stainless steels", International Conference on Welding and Melding by Electron and Laser Beams, France, pp. 267-274, June 14-18, 1993
K. Touileb, J. M. A. Dandachi, “Modeling of arc welding in relation with surface tension, viscosity and lorentz electromagnetic forces", 2nd Saudi Technical Conference and Vocational Training, pp. 26-30, Kingdom of Saudi Arabia, 2002
A. Traidia, F. Roger, J. Schroeder, E. Guyot, T. Marlaud, “On the Effects of Gravity and Sulfur Content on the Weld Shape in Horizontal Narrow Gap GTAW of Stainless Steels”, Journal of Materials Processing Technology, No. 7,No. 213, pp. 1128-1138, 2013 DOI: https://doi.org/10.1016/j.jmatprotec.2013.01.010
O. Savytsky, M. Savytsky, D. Bajić, Y. Shkrabalyur, “Influence of the Impurities On The Depth of Penetration With Carbon Steel Welding”, METALURGIJA, Vol. 53, No. 2, pp. 167-170, 2014
K. S. Prasad, C. S. Rao, D. N. Rao, “An Investigation on Weld Quality Characteristics of Pulsed Current Micro, Plasma Arc Welded Austenitic Stainless Steels”, International Journal of Engineering, Science and Technology, Vol. 4, No. 2, pp. 159-168, 2012
D. Li, S. Lu, W. Dong, D. Li, Y. Li, “Study of the Law Between the Weld Pool Shape Variations With the Welding Parameters Under Two TIG Processes”, Journal of Materials Processing Technology, Vol. 212, No. 1, pp. 128– 136, 2012 DOI: https://doi.org/10.1016/j.jmatprotec.2011.08.015
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