On the effects of gravity and sulfur content on the weld shape in horizontal narrow gap GTAW of stainless steels

Handle URI:
http://hdl.handle.net/10754/562829
Title:
On the effects of gravity and sulfur content on the weld shape in horizontal narrow gap GTAW of stainless steels
Authors:
Traidia, Abderrazak; Roger, Frederic; Schroeder, Jeanne; Guyot, Evelyne; Marlaud, Thorsten
Abstract:
A simplified 2D axisymmetric model and a comprehensive 3D weld pool model, accounting for the free surface deformation and the filler metal addition, have been developed to investigate the factors that lead to asymmetric bead shapes in horizontal GTA welding of stainless steels. Buoyancy-induced flow and the sagging of the pool free surface, under the action of gravity, are found to be responsible for the weld asymmetry and the decrease in the weld penetration at the bottom sidewall. The numerical results clearly emphasized the beneficial role of the Marangoni shear stress in limiting the asymmetry of horizontal GTA welds. An additional experimental investigation showed that the asymmetry in the weld shape can be reduced when placing the lowest sulfur content component at the bottom side. © 2013 Elsevier B.V. All rights reserved.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Publisher:
Elsevier BV
Journal:
Journal of Materials Processing Technology
Issue Date:
Jul-2013
DOI:
10.1016/j.jmatprotec.2013.01.010
Type:
Article
ISSN:
09240136
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorTraidia, Abderrazaken
dc.contributor.authorRoger, Fredericen
dc.contributor.authorSchroeder, Jeanneen
dc.contributor.authorGuyot, Evelyneen
dc.contributor.authorMarlaud, Thorstenen
dc.date.accessioned2015-08-03T11:11:49Zen
dc.date.available2015-08-03T11:11:49Zen
dc.date.issued2013-07en
dc.identifier.issn09240136en
dc.identifier.doi10.1016/j.jmatprotec.2013.01.010en
dc.identifier.urihttp://hdl.handle.net/10754/562829en
dc.description.abstractA simplified 2D axisymmetric model and a comprehensive 3D weld pool model, accounting for the free surface deformation and the filler metal addition, have been developed to investigate the factors that lead to asymmetric bead shapes in horizontal GTA welding of stainless steels. Buoyancy-induced flow and the sagging of the pool free surface, under the action of gravity, are found to be responsible for the weld asymmetry and the decrease in the weld penetration at the bottom sidewall. The numerical results clearly emphasized the beneficial role of the Marangoni shear stress in limiting the asymmetry of horizontal GTA welds. An additional experimental investigation showed that the asymmetry in the weld shape can be reduced when placing the lowest sulfur content component at the bottom side. © 2013 Elsevier B.V. All rights reserved.en
dc.publisherElsevier BVen
dc.subjectArc weldingen
dc.subjectBuoyancy convectionen
dc.subjectDissimilar weldsen
dc.subjectGravity asymmetryen
dc.subjectNarrow gapen
dc.subjectNumerical simulationen
dc.titleOn the effects of gravity and sulfur content on the weld shape in horizontal narrow gap GTAW of stainless steelsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalJournal of Materials Processing Technologyen
dc.contributor.institutionAREVA NP, Technical Center, BP 40001 Saint Marcel, 71328 Chalon sur Saone, Franceen
dc.contributor.institutionEcole Nationale Superieure de Techniques Avancees (ENSTA-ParisTech), Materials and Structures Group, Department of Mechanical Engineering, Chemin de la Huniere, 91761 Palaiseau Cedex, Franceen
kaust.authorTraidia, Abderrazaken
kaust.authorRoger, Fredericen
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