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Titre du document / Document title

Optimization of the pulsed current gas tungsten arc welding (PCGTAW) parameters for corrosion resistance of super duplex stainless steel (UNS S32760) welds using the Taguchi method

Auteur(s) / Author(s)

YOUSEFIEH M. (1) ; SHAMANIAN M. (1) ; SAATCHI A. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, IRAN, REPUBLIQUE ISLAMIQUE D'

Résumé / Abstract

In the present work, a design of experiment (DOE) technique, the Taguchi method, has been used to optimize the pulsed current gas tungsten arc welding (PCGTAW) parameters for the corrosion resistance of super duplex stainless steel (UNS S32760) welds. A L9 (34) orthogonal array (OA) of Taguchi design which involves nine experiments for four parameters (pulse current, background current, % on time, pulse frequency) with three levels was used. Corrosion resistance in 3.5%NaCl solution was evaluated by anodic polarization tests at room temperature. Analysis of variance (ANOVA) is performed on the measured data and S/N (signal to noise) ratios. The higher the better response category was selected to obtain optimum conditions. The optimum conditions providing the highest pitting potential were estimated. The optimum conditions were found as the second level of pulse current (120 A), second level of background current (60 A), third level of% on time (80) and third level of pulse frequency (5 Hz). Under these conditions, pitting potential was predicted as 1.04 VscE that was very close to the observed value of 1.06 VSCE. As a result of Taguchi analysis in this study, the pulse current was the most influencing parameter on the corrosion resistance and the background current had the next most significant effect. The percentage contributions of pulse current, background current, % on time, and pulse frequency to the corrosion resistance are 66.28%, 25.97%, 2.71% and 5.04%, respectively. Consequently, the Taguchi method was found to be promising technique to obtain the optimum conditions for such studies. Moreover, the experimental results obtained confirm the adequacy and effectiveness of this approach.

Revue / Journal Title

Journal of alloys and compounds    ISSN  0925-8388 

Source / Source

2011, vol. 509, no3, pp. 782-788 [7 page(s) (article)] (29 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Kidlington, ROYAUME-UNI  (1991) (Revue)

Mots-clés anglais / English Keywords

Corrosion

;

Experimental result

;

Pitting potential

;

Signal to noise ratio

;

Anodic polarization

;

Three level system

;

Time dependence

;

Array

;

Experimental design

;

Taguchi method

;

Weld

;

Duplex stainless steel

;

Corrosion resistance

;

GTA welding

;

Pulse current

;

Optimization

;

Mots-clés français / French Keywords

NaCl

;

Corrosion

;

Résultat expérimental

;

Potentiel formation piqûre

;

Rapport signal bruit

;

Polarisation anodique

;

Système 3 niveaux

;

Dépendance du temps

;

Réseau (arrangement)

;

Plan expérience

;

Méthode Taguchi

;

Soudure

;

Acier inoxydable duplex

;

Résistance corrosion

;

Soudage TIG

;

Courant impulsionnel

;

Optimisation

;

Mots-clés espagnols / Spanish Keywords

Corrosión

;

Resultado experimental

;

Potencial picadura

;

Relación señal ruido

;

Polarización anódica

;

Sistema 3 niveles

;

Dependencia del tiempo

;

Red

;

Plan experiencia

;

Método Taguchi

;

Soldadura

;

Acero inoxidable duplex

;

Resistencia corrosión

;

Soldeo TIG

;

Corriente impulsional

;

Optimización

;

Mots-clés d'auteur / Author Keywords

Pulse current gas tungsten arc welding

;

Super duplex stainless steel

;

Corrosion

;

Taguchi method

;

Analysis of variance

;

Localisation / Location

INIST-CNRS, Cote INIST : 1151, 35400019357855.0420

Nº notice refdoc (ud4) : 23753048



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