Comparative studies on weldability and mechanical characteristics of semi- killed steel using different arc welding technique

Muthukumaran, N.; Kathiresan, G; Raam, M.N. Shree; Chandru, G.; Dineshkumar, S.; Chiranjeevi, K.; Rajkumar, S.; Manikandan, M.; Arulmurugan, B.

doi:10.1016/j.matpr.2022.04.146

Cited by 3 publications

(4 citation statements)

References 24 publications

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“…It was concluded in the study that as compared to SMAW, the mechanical properties of OAW was inferior due to the inherent low power density of the OAW process. In a study examining the mechanical characteristics of semikilled steel plates using different arc welding methods, Muthukumaran et al [12] reported that tensile failure occurred in the weld metal in the case of the GMAW/GTAW and in the base metal in the case activated GTAW due to the formation of martensite in the weld. They also noted that the joints welded using activated GTAW exhibited higher strengths compared to those welded by GMAW/GTAW.…”

Section: Results and Di̇scussi̇onmentioning

confidence: 99%

“…It was concluded that FSW eliminated the problems associated with fusion welding processes and that welds produced by FSW presented superior mechanical properties compared to those produced by GMAW and SMAW. Muthukumaran et al [12] observed that the highest ultimate tensile strength in semi-killed steel was obtained in activated GTAW which was 2.5-5% greater than that obtained by other processes such as GMAW and GTAW, while maximum impact toughness obtained from GTAW was 50% higher than that obtained from GMAW and activated GTAW. These results were attributed to the multiple passes associated with GTAW and the formation of martensite in activated GTAW.…”

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confidence: 96%

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Investigation on the Microstructure and Mechanical Properties of ASTM A131 Steel Manufactured by Different Welding Methods

Ata

Çalık

Uçar

2022

Advances in Materials Science

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Welding is an indispensable manufacturing process in the shipbuilding industry. The fierce competition involved often necessitates a cost-effective and reliable welding method. In this study, the weldabilities, microstructures and some mechanical properties of ASTM A131 (Grade A) steel joints fabrication by submerged arc welding (SAW), metal active gas (MAG) welding and plasma arc welding (PAW) have been investigated. The microstructures of the welds were examined by optical microscopy. The mechanical properties of the joints were determined by microhardness measurements, tensile and impact tests. The results showed that tensile strength of the joints reached a tensile strength of up to 462 MPa. The locations of the fractures were always adjacent to the base metal. The Charpy impact energy of the weld metal reached a value of 72.5 J, which was 25 % higher than that of the base metal at 57.7 J. A relatively high hardness of 221 HV was obtained in the PAW method compared to 179 HV in the base metal.

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Section: Results and Di̇scussi̇onmentioning

confidence: 99%

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confidence: 96%

Investigation on the Microstructure and Mechanical Properties of ASTM A131 Steel Manufactured by Different Welding Methods

Ata

Çalık

Uçar

2022

Advances in Materials Science

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“…Applications of activating uxes can improve weld penetration and the mechanical properties of the weld bead. They are effective in joining various compounds such as stainless steel, mild steel, nickel-based alloys, and magnesium-based alloys [1][2][3][4] and can be utilized in various welding processes, including tungsten inert gas (TIG) [2,[5][6][7] , Gas Metal Arc Welding (GMAW) [1] , and laser welding [8,9] . Their application is widespread and commonly used to increase penetration, reduce energy input, enhance mechanical properties, and in uence the microstructure of the weld bead [10] .…”

Section: Introductionmentioning

confidence: 99%

Effect of activating fluxes on geometry, hardness, and microstructure of 316L stainless steel in GMAW

WANG,

Klaric

2024

Preprint

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Activating fluxes (AF) can be applied in the welding process to improve the morphology, microstructure, and mechanical properties, such as hardness, tensile strength, yield strength, etc. In regard to published research on AF application in Tungsten Inert Gas (TIG) welding, there are limited studies concerning the Gas Metal Arc Welding (GMAW) process. This gap in research has prompted investigations aimed at finding out the AF’s influence during the GMAW process. The purpose of this paper is to apply three AF (SiO2, TiO2, and CaCO3) in 316L stainless steel GMAW processing and to analyze their influence on weld bead geometry, hardness and microstructure. The results showed that the highest penetration and the smallest width can be obtained using TiO2 as AF, and the highest reinforcement can be obtained by CaCO3 as AF. They also indicated that AF addition could significantly increase after-welding hardness, which might be caused by the microstructure changes. The microstructure observation revealed that the welding area without AF was mainly composed of austenite, and due to the addition of AF increased the welding temperature, which caused the martensite structure to be found in these samples. The heat treatment was introduced to reduce the hardness since the too big and uneven hardness would bring negative consequences such as brittleness. The after-HT analysis showed that HT can reduce the hardness effectively and can improve the uniformity of whole weld bead. Additionally, it was found that samples with AF were more sensitive to HT. This study concludes that AF can be applied in GMAW welding process and can influence the weld bead significantly.

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“…Moreover, these wide applications are increasing with the development of technologies [1]. Joining processes such as brazing [2,3], soldering [4,5], arc welding [6,7], laser welding [8,9], hybrid welding [10,11], electron beam welding [12,13], resistance welding [14,15], ultrasonic welding [16,17], friction crush welding [18,19] and other types of welding processes have been covered in literature. Arc welding processes among all these processes appear as not recommended processes for obtaining felicitous dissimilar welds such as Al-steel based on features of the arc-induced melting and hardening process such as the evolution of brittle intermetallic compounds (IMCs) [20].…”

Section: Introductionmentioning

confidence: 99%

A Review on the Friction Stir Brazing for Joining Dissimilar Materials

Subhi

2022

IJOIR

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Friction stir brazing (FSB) is a new technology developed for its ability to join similar and dissimilar metals and alloys resulting in a joint with considerable characteristics through the use of interlayer (braze) material under the action of a pinless rotating tool and other FSB parameters. The frictional heat during FSB is responsible for the melting of the braze material between the two workpieces, while the shoulder action must be satisfactory for the extrusion of the excess braze liquid phase depending on the FSB parameters used. The parameters of FSB also have a considerable impact on the microstructure and mechanical characteristics of friction stir brazed (FSBed) joints. Sound interfacial bonding can be observed in the central zone of FSBed joints, where intermetallic compounds (IMCs) can be formed by direct diffusion among the dissimilar workpieces after extrusion of liquid phase rather than by mechanical mixing or solidification of braze material. Increasing the transverse speed at a constant rotational speed has an influence on the peak temperature, but it remarkably reduces the holding time owing to the increased cooling rate. The use of vibration in the FSB increments the fluidity of the molten braze material among the joining workpieces resulting in a more homogeneous distribution of IMCs particles. In this review article, FSB parameters, bonding mechanisms, as well as the microstructure, and mechanical properties of FSBed joints are reviewed.

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Comparative studies on weldability and mechanical characteristics of semi- killed steel using different arc welding technique

Cited by 3 publications

References 24 publications

Investigation on the Microstructure and Mechanical Properties of ASTM A131 Steel Manufactured by Different Welding Methods

Investigation on the Microstructure and Mechanical Properties of ASTM A131 Steel Manufactured by Different Welding Methods

Effect of activating fluxes on geometry, hardness, and microstructure of 316L stainless steel in GMAW

A Review on the Friction Stir Brazing for Joining Dissimilar Materials

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