Modeling of the adsorption kinetics and the convection of surfactants in a weld pool
2008 (English)In: Journal of heat transfer, ISSN 0022-1481, Vol. 130, no 9Article in journal (Refereed) Published
This paper presents a comprehensive three-dimensional, time-dependent model for simulating the adsorption kinetics and the redistribution of surfactants at the surface and in the bulk of a weld pool. A physicochemical approach that was included in this paper allows the surfactant concentration at the surface and in the bulk to depart from its thermodynamical equilibrium. The Langmuir equilibrium adsorption ratio was based on the k(seg) coefficient of Sahoo (1988, "Surface-Tension of Binary Metal-Surface-Active Solute Systems Under Conditions Relevant to Welding Metallurgy," Metall. Trans. B, 19B, pp. 483-491) and was finally used for calculating fluid flow and heat transfer in gas tungsten arc welding of a super duplex stainless steel, SAF 2507. In this study, the authors applied the multicomponent surfactant mass transfer model to investigate the effect of the influence of sulfur and oxygen redistribution in welding of a super duplex stainless steel.
Place, publisher, year, edition, pages
2008. Vol. 130, no 9
surfactant, GTA welding, thermocapillary, mell flow, simulation, diffusion, tension, metal, interface, systems, gta
IdentifiersURN: urn:nbn:se:kth:diva-17690DOI: 10.1115/1.2946476ISI: 000257628600008ScopusID: 2-s2.0-56449104281OAI: oai:DiVA.org:kth-17690DiVA: diva2:335735
QC 201005252010-08-052010-08-05Bibliographically approved