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

Abderrazak Traidia; Frederic Roger; Jeanne Schroeder; Evelyne Guyot; Thorsten Marlaud

doi:10.1016/j.jmatprotec.2013.01.010

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

Abderrazak Traidia, Frederic Roger, Jeanne Schroeder, Evelyne Guyot, Thorsten Marlaud

Physical Sciences and Engineering

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

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.

Original language	English (US)
Pages (from-to)	1128-1138
Number of pages	11
Journal	Journal of Materials Processing Technology
Volume	213
Issue number	7
DOIs	https://doi.org/10.1016/j.jmatprotec.2013.01.010
State	Published - Jul 2013

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01

ASJC Scopus subject areas

Metals and Alloys
Modeling and Simulation
Ceramics and Composites
Industrial and Manufacturing Engineering
Computer Science Applications

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10.1016/j.jmatprotec.2013.01.010

Cite this

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

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. {\textcopyright} 2013 Elsevier B.V. All rights reserved.",

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AU - Traidia, Abderrazak

AU - Roger, Frederic

AU - Schroeder, Jeanne

AU - Guyot, Evelyne

AU - Marlaud, Thorsten

N1 - KAUST Repository Item: Exported on 2020-10-01

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AB - 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.

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

Abstract

Bibliographical note

ASJC Scopus subject areas

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