Modeling of heat transfer and fluid flow during laser welding of aluminum

Allalou, Nabil; Amara, El-Hachemi; Mebani, N.; Achab, L.; Hamadi, F.

doi:10.1109/caol.2005.1553828

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…One of the main reasons why there is a limited spread of aluminium alloys in mechanical structures is their bad weldability. For these particular alloys, laser welding is an efficient solution due to its ability to strictly control the heat input and molten pool size [2,3]. Moreover, between the input and the output variables, we can formulate a mathematical model to obtain a quality weld.…”

Section: Introductionmentioning

confidence: 99%

Research on Laser Micro Welding of an Aluminum Alloy Pressure Sensor

Ciobanu

Donțu

Besnea

et al. 2015

AMR

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This paper presents in detail the laser welding of a new mechatronic component belonging to the pressure sensors made by aluminum alloy AW2007. Due to very high reflectivity of aluminum alloys, fast oxidation, the absorption of gases from the surrounding medium, special difficulties arise at laser beam welding and most situations require appropriate surface pretreatment. Given these issues, the paper present an experimental study on the influence of welding parameters on the seam quality for the aluminum alloy AW2007. In addition of the study regarding the influence of welding parameters, such as, laser power, welding speed, we conducted an analysis on the influence of the initial temperature of the material on the quality of the weld. Besides these aspects the paper presents a constructive solution for a device used to optimize the laser welding process of the sensor.

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Section: Introductionmentioning

confidence: 99%

Research on Laser Micro Welding of an Aluminum Alloy Pressure Sensor

Ciobanu

Donțu

Besnea

et al. 2015

AMR

View full text Add to dashboard Cite

show abstract

Numerical simulation of transport phenomena and its effect on the weld profile and solute distribution during laser welding of dissimilar aluminium alloys with and without beam oscillation

Mohan

Franciosa²,

Ceglarek³

et al. 2022

Int J Adv Manuf Technol

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Remote Laser Welding (RLW) of Aluminium alloys has significant importance in lightweight manufacturing to decrease the weight of the body in white. It is critical to understand the physical process of transport phenomena during welding which is highly related to the mechanical performance of the joints. To investigate the underlying physics during welding and to understand the influence of beam oscillation on heat transfer, fluid flow and material mixing a transient three-dimensional Finite Element (FE) based Multiphysics model has been developed and validated from the experiments. The effect of welding speed, oscillation amplitude and oscillation frequency on the fusion zone dimensions, flow profile, vorticity profile, cooling rate and thermal gradient during the butt welding of Al-5754 to Al-6005, with sinusoidal beam oscillation, is analysed. It was found that one additional vortex is formed during beam oscillation welding due to the churning action of the oscillating beam. With the increase in oscillation amplitude, welds become wider and the depth of penetration decreases. An increase in oscillation frequency leads to an increase in the flow rate of the molten metal suggesting that the beam oscillation introduces a churning action that leads to an increase in mixing. It was highlighted that the material mixing depends on both diffusion and convection.

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Modeling of heat transfer and fluid flow during laser welding of aluminum

Cited by 2 publications

References 4 publications

Research on Laser Micro Welding of an Aluminum Alloy Pressure Sensor

Research on Laser Micro Welding of an Aluminum Alloy Pressure Sensor

Numerical simulation of transport phenomena and its effect on the weld profile and solute distribution during laser welding of dissimilar aluminium alloys with and without beam oscillation

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