Influence of activated flux on micro-structural and mechanical properties of AISI 1018 during MIG welding

Baghel, Anand; Sharma, Chaitanaya; Rathee, Sandeep; Srivastava, Manu

doi:10.1016/j.matpr.2021.05.210

Cited by 12 publications

(2 citation statements)

References 16 publications

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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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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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“…They accomplished that the absence of flux, oxide, or chloride flux provided U, V, and bowl shape weld bead weldments respectively. Baghel et al [11] analyzed the result of five activated fluxes during MIG operation for penetration depth along with mechanical characteristics for AISI 1018. They concluded that Activated flux lowered the aspect ratio among FZ while coarser and fine HAZ provided an enhanced aspect ratio.…”

Section: Introductionmentioning

confidence: 99%

Effect of TIG and activated flux TIG welding processes on weld bead geometry, microstructure, and hardness of SAF 2507 grade super duplex stainless steel joints

Dagur,

Kumar,

Singh

et al. 2023

Eng. Res. Express

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Tungsten inert gas (TIG) welding is frequently used to fabricate super duplex stainless steel weldments due to its superior mechanical qualities and attractive appearance in contrast with other arc welding techniques. The broad use of TIG welding remains constrained despite all of its advantages. Thus, the process of activated flux tungsten inert gas (A-TIG) welding is created. In the current study, ATIG welding with different oxide fluxes is used to execute bead-on-plate welding on 6mm thick super duplex (SS) SAF 2507 grade. The TIG and ATIG processes are used for bead-on-plate welding, and the macrostructure, microstructure, and mechanical features of super DSS weld beads are analysed. When different oxide fluxes are used, the A-TIG technique achieves a greater depth of penetration and a narrower weld bead width than the standard TIG process. SiO2 flux with ATIG welding gives the highest depth of penetration (5.42 mm) among all other fluxes used. Also, A-TIG welding using SiO2 flux has a finer grain structure and a higher hardness value than other fluxes. The primary microstructure in the A-TIG weld zone was austenitic, but delta ferrite was still present.

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The Effect of Fe2O3 and Cr2O3 on Weld Bead Geometry Using Activated Metal Inert Gas Welding

Agrawal,

Koli,

Aravindan

2024

Lecture Notes in Mechanical Engineering

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Influence of activated flux on micro-structural and mechanical properties of AISI 1018 during MIG welding

Cited by 12 publications

References 16 publications

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

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

Effect of TIG and activated flux TIG welding processes on weld bead geometry, microstructure, and hardness of SAF 2507 grade super duplex stainless steel joints

The Effect of Fe2O3 and Cr2O3 on Weld Bead Geometry Using Activated Metal Inert Gas Welding

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