Effect of processing parameters on the interface characteristics and joint strengths of aluminium-on-steel lap joints produced using conduction mode laser welding

Mukherjee, Madhumita; Kundu, Janardan; Shome, Mahadev

doi:10.1007/s40194-022-01392-4

Cited by 4 publications

(1 citation statement)

References 54 publications

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“…Due to these highly advantageous properties, RLW has been widely used in various industries such as automobile manufacturing, shipbuilding, bridge construction, electric vehicles and lightweight structures [9] [10]. In particular, demands such as weight reduction, improving fuel e ciency, and reducing vehicle emissions have led to increased interest in laser welding for joining aluminum alloy sheets [11] [12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Laser Beam Power on AA6082 Plates Joined by Wobbling Mode Remote Laser Welding

AVCI,

Franciosa

2024

Preprint

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The advancement of technology has led to an increased need for new materials, which has necessitated the development of new joining techniques. With the adaptation of advanced automation technology, remote laser welding, which has become increasingly widespread, has facilitated the joining of desired complex structures. In this context, the determination of the laser beam power, which is the locomotive of the welding parameters, before the joining process has played an important role in the weld quality. In this study, 2 mm thick AA6082 plates were joined with a wobling mode remote laser welding system using 4 kW, 3 kW and 2.5 kW laser beam powers. Except for the laser beam power, other parameters were optimized by preliminary studies. The welding process was performed in circular oscillation mode and the time-dependent motion of the laser beam was calculated in advance. The seam geometry, microstructure and hardness properties of the weld line initial, middle and end regions of each joining plate were investigated. As a result of the investigations, full penetration was achieved in the joints made with 4 kW and 3 kW laser powers, but the use of 4kW laser power reduced the weld quality. As a result of using 2.5 kw laser power, full penetration was not achieved and porosity formations were observed. In addition, seam geometry values, HAZ distance and compound dimensions close to the fusion line decreased and weld zone element values changed with decreasing laser power. The transformation in structural and elemental values caused regional hardness changes.

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Section: Introductionmentioning

confidence: 99%

Effect of Laser Beam Power on AA6082 Plates Joined by Wobbling Mode Remote Laser Welding

AVCI,

Franciosa

2024

Preprint

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Investigation on microstructure and mechanical properties of the dissimilar lap welding of Al alloy to steel with different filler materials and laser powers

Li,

Han,

et al. 2024

Int J Adv Manuf Technol

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Effect of laser power on weld microstructure of AA6082 sheets remote laser welded by circular beam wobbling

Avci,

Franciosa

2024

Weld World

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This paper aims to investigate the combined effect of circular beam wobbling and varying laser power on crack formation, weld geometry, microstructure and hardness during remote laser welding of AA6082 alloy. AA6082 sheets of 2 mm thickness were joined in overlap weld configuration using wobbling mode remote laser welding at 4 kW, 3 kW and 2.5 kW. Full penetration was achieved in the joints made at 4 kW and 3 kW, with severe crack formation. Welds at 2.5 kW showed partial penetration and no cracks; however, porosity formation was observed. While no significant change was observed in the dendritic structure and compound contents in fusion zones with full penetration, compound clusters dominated by Cu and Si elements were revealed in the seam root region at 2.5 kW (partial penetration). In full penetration welds (4 and 3 kW), the hardness decreased in the center of the fusion zone but increased from the surface to the root zone. However, for the partial penetration weld (2.5 kW), a limited change in the hardness values determined in the same direction was observed.

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Effect of processing parameters on the interface characteristics and joint strengths of aluminium-on-steel lap joints produced using conduction mode laser welding

Cited by 4 publications

References 54 publications

Effect of Laser Beam Power on AA6082 Plates Joined by Wobbling Mode Remote Laser Welding

Effect of Laser Beam Power on AA6082 Plates Joined by Wobbling Mode Remote Laser Welding

Investigation on microstructure and mechanical properties of the dissimilar lap welding of Al alloy to steel with different filler materials and laser powers

Effect of laser power on weld microstructure of AA6082 sheets remote laser welded by circular beam wobbling

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