Effect of process parameters on pulsed laser welding of AA5083 alloy using response surface methodology and pulse shape variation

Chludzinski, Mariane; Santos, Rafael; Churiaque, Cristina; Ortega-Iguña, Marta; Sánchez-Amaya, J.M.

doi:10.1007/s00170-022-09028-z

Cited by 10 publications

(4 citation statements)

References 27 publications

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“…The main factors influencing the welding quality in the TIG welding process are the welding current, the welding voltage, and the welding speed. To determine the optimal process parameters for welding, a three-factor, three-level, three-response Box–Behnken design test was established [ 27 , 28 , 29 , 30 ]. Table 4 presents the factor and level table of this experiment, while Table 5 displays the complete test table.…”

Section: Optimization Of Tig Welding Process Parameters Based On Rsmmentioning

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: Optimization Of Tig Welding Process Parameters Based On Rsmmentioning

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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“…As the power level increases or the incidence diameter decreases, the energy density increases considerably, giving rise to the keyhole, which is deeply penetrating, causing narrow HAZ and low distortion in the parts. This mode allows welding of a wider range of materials and thicknesses, higher speeds and better performance and productivity [15], but larger defects (Figure 4) [16].…”

Section: Innovation At Lbwmentioning

confidence: 99%

Innovation in Welding in Terms of Processes, Weldability or Design Connections

Trindade

2024

Advances in Materials Processing - Recent Trends and Applications in Welding, Grinding, and Surface Treatment Processes

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Innovation in welding when analysed from several aspects: In terms of processes, it can be seen on a daily basis, with brands presenting new concepts that have been implemented in new machines and equipment; regarding weldability, the new developments are implemented and depend on the acquisition of techniques. At the project level, innovation is much slower as it depends on checking the consistency of weldability and approval in the form of standards or codes. In this document, simple experimental studies are used, where some of the points mentioned above are put into practice, based on MIG and laser welding processes. The MIG variants have led to development in welding in terms of robustness and productivity. Meanwhile, laser welding has introduced new competitive welding solutions. The experimental component focused on welding steel, stainless steel and aluminium alloy as these are the most used and complement each other in the most varied structural and constructive solutions. Meanwhile, aluminium alloys have many advantages in uses where a good relationship between mechanical strength and weight is desired. The methods are based on simple visual or micrographic analyses and tensile and hardness tests. In the end, it is concluded that the welds meet the quality that would be necessary for the design requirements in butt joints.

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“…In addition, the average power involved achieves higher penetrations than in the continuous mode [ 7 , 8 , 9 ], allowing its application with small and economical apparatus. Furthermore, its accurate energy control permits delivering different pulse shapes to improve depth penetration, reduce defects, and join dissimilar materials [ 8 , 9 , 10 , 11 , 12 ]. In terms of the mechanical impact of the process in the FZ, its application on a St37 carbon steel alloy increased the hardness up to 200 HV [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Low-Energy Pulsed-Laser Welding as a Root Pass in a GMAW Joint: An Investigation on the Microstructure and Mechanical Properties

et al. 2022

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Root pass is a fundamental step in multi-pass welding. In gas metal arc welding (GMAW), the weld bead qualities depend on the process parameters, filler materials, and welder abilities. This work investigates the effect of a Nd: YAG pulsed laser as a first pass to reduce the welders’ reliance on the AH36 low-alloy steel with 5.5 mm thickness. This autogenous automatable process delivers reduced thermal impact due to the concentrated high-energy source, pulse overlap, and higher penetration depth-to-power ratio than continuous lasers. The outcomes indicate that the PL as a root welding generated a small HAZ compared to the GMAW condition. In addition, the subsequent arc passes positively affected the microstructure, reducing the hardness from around 500 to 230 HV. The PL + GMAW achieved similar strength results to the GMAW, although its Charpy impact values at −50 °C were around 15% lower than the arc condition.

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Effect of process parameters on pulsed laser welding of AA5083 alloy using response surface methodology and pulse shape variation

Cited by 10 publications

References 27 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

Innovation in Welding in Terms of Processes, Weldability or Design Connections

Low-Energy Pulsed-Laser Welding as a Root Pass in a GMAW Joint: An Investigation on the Microstructure and Mechanical Properties

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