Microstructure Evolution and Mechanical Properties of 2219 Aluminum Alloy A–TIG Welds

Ahmadi, E.; Ebrahimi, Alireza; Hoseinzadeh, Alireza

doi:10.1134/s0031918x20050026

Cited by 9 publications

(3 citation statements)

References 15 publications

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“…The weld zone was sectioned and sampled, followed by the preparation of optical metallographic samples using standard mechanical polishing techniques. Subsequently, the samples underwent chemical etching with Keller reagent (HF:HCl:HNO 3 :H 2 O = 1:1.5:2.5:95) and were observed using an optical microscope (Leica Metallographic Microscope DMI8C) [34][35][36][37]. Figure 18 illustrates the metallographic structure of the 6061-T6 aluminum alloy weld sample.…”

Section: Structure Property Analysismentioning

confidence: 99%

Tungsten Inert Gas Welding of 6061-T6 Aluminum Alloy Frame: Finite Element Simulation and Experiment

Hu,

Pei,

et al. 2024

Materials

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In order to address the irregularity of the welding path in aluminum alloy frame joints, this study conducted a numerical simulation of free-path welding. It focuses on the application of the TIG (tungsten inert gas) welding process in aluminum alloy welding, specifically at the intersecting line nodes of welded bicycle frames. The welding simulation was performed on a 6061-T6 aluminum alloy frame. Using a custom heat source subroutine written in Fortran language and integrated into the ABAQUS environment, a detailed numerical simulation study was conducted. The distribution of key fields during the welding process, such as temperature, equivalent stress, and post-weld deformation, were carefully analyzed. Building upon this analysis, the thin-walled TIG welding process was optimized using the response surface method, resulting in the identification of the best welding parameters: a welding current of 240 A, a welding voltage of 20 V, and a welding speed of 11 mm/s. These optimal parameters were successfully implemented in actual welding production, yielding excellent welding results in terms of forming quality. Through experimentation, it was confirmed that the welded parts were completely formed under the optimized process parameters and met the required product standards. Consequently, this research provides valuable theoretical and technical guidance for aluminum alloy bicycle frame welding.

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Section: Structure Property Analysismentioning

confidence: 99%

Tungsten Inert Gas Welding of 6061-T6 Aluminum Alloy Frame: Finite Element Simulation and Experiment

Hu,

Pei,

et al. 2024

Materials

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“…Active flux is a chemical purifying, flowing, or cleaning agent. Flux is primarily used to absorb impurities from slag and remove oxide impurities from welds [23][24][25][26][27]. The main mechanisms occurring to enhance the depth penetration are reverse Marangoni convection [28,29] and arc constriction [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Improving the Formation and Quality of Weld Joints on Aluminium Alloys during TIG Welding Using Flux Backing Tape

Mannapovich,

Touileb

2024

Metals

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This work aimed to compare the quality and properties of the welded joints of AMg6 aluminium alloy produced via conventional TIG welding with the properties of those produced with flux backing tape. This study focussed on the relative length of oxide inclusions (Δoi) and the amount of the excess root penetration (hroot) of the AMg6 alloy weld beads. The results show the influence of the thickness of the flux layer of the backing tape on the formation and quality on the AMg6 alloy welds, along with the effect of flux backing tape and edge preparation on the mechanical properties of the 6 and 8 mm thick welded plates. In accordance with the results obtained, the joints produced by means of TIG welding with flux back backing tape and without edge preparation have higher mechanical properties. Moreover, the TIG welding of AMg6 alloy using flux backing tape reduces the total welding time by 55%, reduces filler wire consumption by 35%, reduces shielding gas consumption by 43% and electricity consumption by 60% per 1 linear meter of the weld line.

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“…They concluded that A-TIG welding had a larger heat input than TIG welding during the welding process, achieving a higher peak temperature and seeing a higher dislocation, which boosted the strength by 10% above TIG welding. Sonar et al [19] examined the major impact of heat input on the microstructural features and tensile properties of 2 mm-thick Inconel 718 alloy sheets connected by gas tungsten confined arc welding. They found that at an ideal heat input of 518 J mm −1 , superior tensile characteristics were achieved.…”

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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Microstructure Evolution and Mechanical Properties of 2219 Aluminum Alloy A–TIG Welds

Cited by 9 publications

References 15 publications

Tungsten Inert Gas Welding of 6061-T6 Aluminum Alloy Frame: Finite Element Simulation and Experiment

Tungsten Inert Gas Welding of 6061-T6 Aluminum Alloy Frame: Finite Element Simulation and Experiment

Improving the Formation and Quality of Weld Joints on Aluminium Alloys during TIG Welding Using Flux Backing Tape

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

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