Optimization of process parameters of the activated tungsten inert gas welding for aspect ratio of UNS S32205 duplex stainless steel welds

Govindaraj, Mahalingam; Nair, Sreehari R.; Sundar, L. Syam; Harikannan, N.

doi:10.1016/j.dt.2014.06.006

Cited by 68 publications

(19 citation statements)

References 22 publications

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“…Hence they are attractive material for applications where these properties are desired like in off-shore industries, food industries, chemical industries, paper industries [5,6], nuclear industries [7,8] and in structural applications as well [9,10]. DSS can be also used as a material for water tankers to supply fresh drinking water in military areas where fresh water is scarce [11]. DSS and SDSS can replace high strength steels and austenitic steels in various applications such as construction of military vehicles, transportation in critical military areas, fabrication of armour steels [12,13], marine, oil & Gas and offshore industries.…”

Section: Introductionmentioning

confidence: 99%

Effect of Intermetallic Phases on Corrosion Behavior and Mechanical Properties of Duplex Stainless Steel and Super-Duplex Stainless Steel

Paulraj¹,

Garg²

2015

Adv. Sci. Technol. Res. J.

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Duplex Stainless Steels (DSS) and Super Duplex Stainless Steel (SDSS) have excellent integration of mechanical and corrosion properties. However, the formation of intermetallic phases is a major problem in their usage. The mechanical and corrosion properties are deteriorated due to the presence of intermetallic phases. These phases are induced during welding, prolonged exposure to high temperatures, and improper heat treatments. The main emphasis of this review article is on intermetallic phases and their effects on corrosion and mechanical properties. First the effect of various alloying elements on DSS and SDSS has been discussed followed by formation of various intermetallic phases. The intermetallic phases affect impact toughness and corrosion resistance significantly. Their deleterious effect on weldments has also been reviewed.

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Section: Introductionmentioning

confidence: 99%

Effect of Intermetallic Phases on Corrosion Behavior and Mechanical Properties of Duplex Stainless Steel and Super-Duplex Stainless Steel

Paulraj¹,

Garg²

2015

Adv. Sci. Technol. Res. J.

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“…Later, Howse et al 13) used flux in TIG welding to overcome the problems associated with cast-to-cast variation in stainless steel. An attempt 14) was madeto optimize welding parameters for an aspect ratio of 1.24. Effects of fluxes on surface appearance, weld morphology, angular distortion, etc.…”

Section: Introductionmentioning

confidence: 99%

Effect of Polarity and Oxide Fluxes on Weld-bead Geometry in Activated Tungsten Inert Gas (A-TIG) Welding

Saha

Das

2020

Journal of Welding and Joining

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In activated tungsten inert gas (A-TIG) welding, a thin layer of suitable activating flux is applied over the base metal to not only enhance penetration of the molten metal into root gap by 2-3 times compared to conventional TIG welding but also reduce the weld bead width considerably. This work focuses on examining the influence of TiO 2 , Fe 2 O 3 and Cr 2 O 3 activating fluxes (single component) on the weld bead geometry observed during the butt joining of 6 mm thick stainless steel (306 grade) plates by A-TIG welding under direct current straight polarity (DCSP). Three weld bead morphological parameters, namely, the depth of penetration, reinforcement and weld bead width, and their ratios are considered. The results are compared with those obtained during conventional TIG welding. The TiO 2 and Fe 2 O 3 fluxes exhibit the potential capabilities in enhancing penetration, reducing weld bead width, and reducing reinforcement. The Cr 2 O 3 flux plays an insignificant role for redefining the weld bead shape, and in certain cases, this flux performs inferior compared to conventional TIG welding.

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“…In comparison to the traditional welding process, in which some factors related to the welding beads such as the aspect factor or the form factor, the depth of penetration, and the bead width are usually taken in consideration [9][10][11], the bead width and the bead height of single welding beads play very important role in the WAAM process. They significantly influences the process stability, the final geometry and quality of manufactured parts, especially in the cases of building thin-wall components [12].…”

Section: Introductionmentioning

confidence: 99%

Prediction of welding bead geometry for wire arc additive manufacturing of SS308l walls using response surface methodology

Thao

Dinh

Khoa

et al. 2020

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In the wire arc additive manufacturing (WAAM) process, the geometry of single welding beads has significant effects on the stability process and the final quality and shape of manufactured parts. In this paper, the geometry of single welding beads of 308L stainless steel was predicted as functions of process parameters (i.e. welding current I, voltage U, and travel speed v) by using the response surface methodology (RSM). A set of experimental runs was carried out by using the Box-Behnken design method. The adequacy of the developed models was assessed by using an analysis of variance (ANOVA). The results indicate that the RSM allows the predictive models of bead width (BW) and bead height (BH) to be developed with a high accuracy: R2-values of BW and BH are 99.01% and 99.61%, respectively. The errors between the predicted and experimental values for the confirmatory experiments are also lower than 5% that again confirms the adequacy of the developed models. These developed models can efficiently be used to predict the desirable geometry of welding beads for the adaptive slicing principle in WAAM.

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Optimization of process parameters of the activated tungsten inert gas welding for aspect ratio of UNS S32205 duplex stainless steel welds

Cited by 68 publications

References 22 publications

Effect of Intermetallic Phases on Corrosion Behavior and Mechanical Properties of Duplex Stainless Steel and Super-Duplex Stainless Steel

Effect of Intermetallic Phases on Corrosion Behavior and Mechanical Properties of Duplex Stainless Steel and Super-Duplex Stainless Steel

Effect of Polarity and Oxide Fluxes on Weld-bead Geometry in Activated Tungsten Inert Gas (A-TIG) Welding

Prediction of welding bead geometry for wire arc additive manufacturing of SS308l walls using response surface methodology

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