Fiber laser-MIG hybrid welding of 5 mm 5083 aluminum alloy

Bunaziv, Ivan; Akselsen, Odd M.; Salminen, Antti; Unt, Anna

doi:10.1016/j.jmatprotec.2016.02.018

Cited by 119 publications

(38 citation statements)

References 9 publications

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“…A key experimental parameter is the relative position between the laser and arc sources, known as laser or arc leading. According to [64,65], the "Leading Arc" (Trailing Laser) configuration provides a deeper penetration, more stability to the arc process and lower the disturbances of the shielding gas, protecting better the arc. "Leading Arc" is also recommended for butt joint configurations without gaps, allowing also higher welding speeds.…”

Section: Gradementioning

confidence: 99%

Laser Hybrid Butt Welding of Large Thickness Naval Steel

Churiaque

Chludzinski

Porrúa-Lara³

et al. 2019

Metals

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Plates joining is one of the first stage at large vessels manufacturing line, process conditioning the whole shipbuilding production. Laser Arc Hybrid Welding (LAHW) process is nowadays providing promising results for large thickness naval steel, being primarily used for welding plates with thicknesses between 6 to 15 mm, reaching up to 51 mm. In addition to this high penetration ability, LAHW allows increasing the production rates. Therefore, this technology is proposed as an alternative to conventional welding processes in shipbuilding, as it integrates the advantages of laser and arc welding, providing high process stability, high welding speed and penetration, narrow weld beads with a low heat input and good metallurgical properties. The present review reports the most representative investigation regarding the use of this technology to join large thickness flat panels of naval steel. It includes a summary of the most influential process variables, equipment characteristics, material properties, naval regulations, as well as microstructural characterisation and mechanical properties of joints. This review is thought to help readers from different backgrounds, covering from non-expert on welding or on naval sector, to industrial LAHW applicators and researchers. The industrial need of performing one single pass procedure to assure high quality welds of high thickness is suggested as one of the key aspects for future investigations.

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Section: Gradementioning

confidence: 99%

Laser Hybrid Butt Welding of Large Thickness Naval Steel

Churiaque

Chludzinski

Porrúa-Lara³

et al. 2019

Metals

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“…Generally, aluminum alloys are joined by arc welding, especially metal inert gas (MIG) welding. Considering the physical-chemical characteristics of aluminum alloys, numerous results indicate that some obvious drawbacks such as: large welding deformation, serious joint softening, and low production efficiency would appear during the arc welding process due to the high heat input and low welding speed [3][4][5]. With features of high energy density, low heat input, high welding speed, and large depth-width ratio, laser welding can effectively solve the above problems [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Laser-Arc Hybrid Welding for AA6082-T6 Aluminum Alloy with Two Different Arc Modes

Han¹,

Yang

Ma³

et al. 2020

Metals

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The effects of arc modes on laser-arc hybrid welding for AA6082-T6 aluminum alloy were comparatively studied. Two arc modes were employed: pulsed metal inert gas arc and cold metal transfer arc. The results indicated that joints without porosity, undercutting, or other defects were obtained with both laser-pulsed metal inert gas hybrid welding (LPMHW) and laser-cold metal transfer hybrid welding (LCHW). Spatter was reduced, and even disappeared, during the LCHW process. The sizes of equiaxed dendrites and the width of the partially melted zone in the LPMHW joint were larger than those in the LCHW joint. The microhardness in each zone of the LPMHW joint was lower than that of the LCHW joint. The softening region in the heat-affected zone of the LPMHW joint was wider than that of the LCHW joint. The tensile strength of the LCHW joint was higher than that of the LPMHW joint. For the two joints, the fractures all occurred in the softening region in the heat-affected zone, and the fracture morphologies showed ductile fracture features. The dimples in the fractograph of the LCHW joint were deeper than those of the LPMHW joint.

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“…Nielsen [8] believed that laser hybrid welding was suitable for thick workpieces welding, compared with Laser welding, it has lower requirements for welding assemblage. Bunaziv [9] found that the addition of helium gas can effectively reduce the pores defects, but it has no obvious effect on the welding stability. However, it is difficult to completely solve the pores defects in aluminum alloy laser welding.…”

Section: Introductionmentioning

confidence: 99%

Optimization of welding parameters on pores migration in Laser-GMAW of 5083 aluminum alloy based on response surface methodology

Hua

Shen

et al. 2019

SN Appl. Sci.

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The mathematical model to reveal the relationship between process parameters and pores migration distance of 5083 aluminum alloy Laser-GMAW was established based on the center composed design of response surface methodology. Three of the welding parameters were chosen as the factors: The welding current, welding speed, and the laser-arc distance. The distance between pores and weld bottom was calculated as the response value. The analysis of variance was used to test the significance of the model. According to the result of experiments, the low welding speed and high current were beneficial to decrease the solidification rate of the molten pool, the pores could overflow from the weld in time. When welding speed is increasing, it is necessary to appropriately increase the welding current and the Laser-arc distance, the volume of the molten pool would be expanded, pores were difficult to be caught by solidifying wall. The optimized parameters of the 30 mm aluminum alloy Laser-MIG hybrid welding were calculated based on the established model. The maximum pores migration distance can be obtained in 135 A/0.6 m/min/1.22 mm (welding current/welding speed/laser-arc distance).

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Fiber laser-MIG hybrid welding of 5 mm 5083 aluminum alloy

Cited by 119 publications

References 9 publications

Laser Hybrid Butt Welding of Large Thickness Naval Steel

Laser Hybrid Butt Welding of Large Thickness Naval Steel

Comparative Study of Laser-Arc Hybrid Welding for AA6082-T6 Aluminum Alloy with Two Different Arc Modes

Optimization of welding parameters on pores migration in Laser-GMAW of 5083 aluminum alloy based on response surface methodology

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