A Review: Parametric effect on mechanical properties and weld bead geometry of Aluminium alloy in GTAW

Singh, Lakshman

doi:10.9790/1684-0662430

Cited by 3 publications

(2 citation statements)

References 9 publications

(7 reference statements)

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“…The Ar gas and brazing filler wire were fed by the automatic system during the brazing process. Therefore, in these welding processes, to control the heat input, cooling rate, and the joint gap is important to reduce zinc vaporization and defects [16][17][18]. Compared to previous studies, most of the joining of Zn-coated steels were performed by using laser/arc or hybrid laser welding using Cu-Si filler.…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, the combination of arc current and brazing speed needs to be optimal for a promising brazed joint performance [14,15]. Meanwhile, zinc vaporization occurs from the Zn-coated steel (base metal) during arc welding processes because the melting temperature (460 • C) and vaporization temperature (906 • C) of Zn are lower than those of arc welding and arc brazing [16].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Arc Brazing Parameters on Microstructure and Joint Properties of Electro-Galvanized Steel

Lee

Sharma

Jung

et al. 2019

Metals

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Arc brazing of zinc-coated steel (EG, Electro-galvanized steel) using Cu-3 wt%Si filler metal was performed. The influence of arc current and brazing speed on the bonding properties of the joint, such as bead characteristics, arc penetration, joint hardness, and tensile shear strength were evaluated. The microstructural characteristics of the joint were examined by scanning electron microscopy (SEM) and the compositional information was revealed by energy dispersive spectroscopy (EDS). The throat thickness varies inversely with the brazing speed. The EG joint shows the formation of Fe2Si phases, which result in higher microhardness than the base metal. The tensile samples were fractured in base metal, while minor bead cracks developed in the samples brazed at 80 cm/min-80 A, 60 cm/min-70 A, 70 cm/min-70 A.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Arc Brazing Parameters on Microstructure and Joint Properties of Electro-Galvanized Steel

Lee

Sharma

Jung

et al. 2019

Metals

View full text Add to dashboard Cite

show abstract

Effect of brazing current and speed on the bead characteristics, microstructure, and mechanical properties of the arc brazed galvanized steel sheets

Sharma

Lee

Choi

et al. 2017

Journal of Materials Processing Technology

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Investigation of mechanical properties and parametric optimization of the dissimilar GTAW of AISI 304 stainless steel and low carbon steel

Ogedengbe

Abioye

Ekpemogu

2018

WJE

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Purpose The purpose of this study is to conduct gas tungsten arc dissimilar welding of AISI 304 stainless steel and low carbon steel within a process window so as to investigate the effects of current, speed and gas flow rate (GFR) on the microstructure and mechanical properties of the weldments. Design/methodology/approach The welding experiment was carried out at different combinations of parameters using WN-250S Kaierda electric welding machine. A combination of scanning electron microscopy and energy dispersive X-ray spectroscopy was used to examine the microstructure of the weldments. Micro-hardness and tensile tests were performed using Vickers hardness tester and Instron universal testing machine, respectively. ANOVA was used to analyze the significance of the parameters on the mechanical properties. Findings The microstructure of the weld region is characterized with dendritic structure with the existence of ferrite and austenite phases. The utilized parameters show significant effects on the ultimate tensile strength (UTS) of the weldments. The current and GFR were found to be the most and least significant factors, respectively. Both the grain size and weld penetration contributed to the UTS of the weldments. The UTS (427-886 MPa) increased with decreasing current and welding speed. In all samples, the weld region exhibited higher hardness (297-396 HV) than the HAZ in the base metals (maximum of 223 Â ± 6 HV). All the three factors show significant effect with the welding speed contributing mostly to the hardness of the weld region. Originality/value The parametric combination that gives the optimum mechanical performance of the dissimilar gas tungsten arc weldments of AISI 304 stainless steel and low carbon steel was established.

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A Review: Parametric effect on mechanical properties and weld bead geometry of Aluminium alloy in GTAW

Abstract: Gas tungsten arc welding (GTAW) is high quality and high precision welding process which

Cited by 3 publications

References 9 publications

Influence of Arc Brazing Parameters on Microstructure and Joint Properties of Electro-Galvanized Steel

Influence of Arc Brazing Parameters on Microstructure and Joint Properties of Electro-Galvanized Steel

Effect of brazing current and speed on the bead characteristics, microstructure, and mechanical properties of the arc brazed galvanized steel sheets

Investigation of mechanical properties and parametric optimization of the dissimilar GTAW of AISI 304 stainless steel and low carbon steel

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