Improvements of laser weldability of aluminum alloys by laser texturization

Sánchez-Amaya, J.M.; Boukha, Zouhair; González-Rovira, L.; Amaya-Vázquez, M. R.; Botana, Francisco

doi:10.1063/1.4707657

Cited by 2 publications

(3 citation statements)

References 12 publications

(19 reference statements)

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“…In figure 7 shows a photograph of a molten pool under laser action with power P = 1.50 kW and velocity v = 8.3 mm s −1 on an aluminium sample [19]. Good coherence was obtained between the results of the numerical calculations and the actual experiments (see figures 6 and 7).…”

Section: Obtained Results and Discussionmentioning

confidence: 68%

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Numerical modeling and simulation for laser beam welding of ultrafine-grained aluminium

et al. 2021

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Laser beam welding of aluminium offers huge potential for a wide variety of welding of different thickness parts with the method of thermal conductivity due to the relatively high difference between melting temperature and evaporation. However, due to the high melting temperature and good thermal conductivity of this light metal, the temperature gradients during the welding process are usually high, causing residual stresses in the weld, which can lead to undesirable deterioration of the weld pool properties and the quality of the process. Physical modelling and simulations of the laser welding process are powerful tools for gaining a fundamental understanding of the technological process. They are also a suitable tool for preliminary assessment of the intervals in which the real preliminary experiments for process optimization should take place. This work is devoted to the numerical modelling of the process of welding ultrafine-grained aluminium using a fibre laser. A three-dimensional model of the welding process was created, using the finite element method implemented in the program ABAQUS. The temperature fields at depth z and on the surface x, y in the welded samples is determined. The temperature change as a function of time for different coordinates of the weld is also analysed. During numerical calculations, the power, machining speed and diameter of the workplace are variable. The obtained results are compared with real experiments conducted in the laboratory by other researchers.

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Section: Obtained Results and Discussionmentioning

confidence: 68%

“…The discretization of the sample was performed by hexahedral finite elements DC3D4 without intermediate nodes [19]. In the welding plane, the global size of the elements is 1 mm, and around local compression (the dark area of…”

Section: Geometric Modelmentioning

confidence: 99%

Numerical modeling and simulation for laser beam welding of ultrafine-grained aluminium

et al. 2021

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“…In that wavelength domain, the laser absorption rate for aluminium is a factor of two higher and the laser welding process can be initiated more efficiently. For this reason, direct diode lasers are favourable for aluminium laser welding applications [80][81][82].…”

Section: Laser Weldingmentioning

confidence: 99%

Joining Technologies for Aluminium Castings—A Review

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Cai

et al. 2023

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Aluminium castings have been widely used in many industries, including automotive, aerospace, telecommunication, construction, consumer products, etc., due to their lightweight, good electric and thermal conductivity, and electromagnetic interference/radio frequency interference (EMI/RFI) shielding properties. The main applications of aluminium castings are in automotive industry. For lighweighting purposes, more and more aluminium castings are used in the automotive vehicle structures to reduce weight, improve fuel efficiency, and reduce greenhouse gas emissions. However, due to the features of cast aluminium, such as porosity, poor surface quality, a tendency toward hot cracking, and low ductility, joining these materials is problematic. In this paper, the joining technologies for aluminium castings and the related issues, mainly cracking and porosity, are reviewed. The current state-of-the-art of joining technologies is summarized, and areas for future research are recommended.

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Improvements of laser weldability of aluminum alloys by laser texturization

Cited by 2 publications

References 12 publications

Numerical modeling and simulation for laser beam welding of ultrafine-grained aluminium

Numerical modeling and simulation for laser beam welding of ultrafine-grained aluminium

Joining Technologies for Aluminium Castings—A Review

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