Finite Element Modeling for the Structural Analysis of Al-Cu Laser Beam Welding

Hartel, Udo; Ilin, Alexander; Bantel, Christoph; Gibmeier, Jens; Michailov, Vesselin

doi:10.1016/j.phpro.2016.08.147

Cited by 10 publications

(5 citation statements)

References 5 publications

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“…Whereas when welding Al/Fe, Al/Ti, maximum mechanical properties are required. It should be noted that the processes modeling of the laser welding of dissimilar materials is widespread, and the obtained data are verifiable [ 115 , 119 ]. However, there are few articles on the modeling of laser welding of Al/Fe, Al/Ti, Al/Cu in open literature sources.…”

Section: Discussionmentioning

confidence: 99%

A Review: Laser Welding of Dissimilar Materials (Al/Fe, Al/Ti, Al/Cu)—Methods and Techniques, Microstructure and Properties

Kuryntsev

2021

Materials

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Modern structural engineering is impossible without the use of materials and structures with high strength and low specific weight. This work carries out a quantitative and qualitative analysis of articles for 2016–2021 on the topic of welding of dissimilar alloys. It is found that laser welding is most widely used for such metal pairs as Al/Fe, Al/Ti, and Al/Cu. The paper analyzes the influence of the basic techniques, methods, and means of laser welding of Al/Fe, Al/Ti, and Al/Cu on the mechanical properties and thickness of the intermetallic compound (IMC). When welding the lap joint or spike T-joint configuration of Al/Fe, it is preferable to melt the steel, which will be heated or melted, by the laser beam, and through thermal conduction, it will heat the aluminum. When welding the butt-welded joint of Al/Fe, the most preferable is to melt the aluminum by the laser beam (150–160 MPa). When welding the butt-welded joint of Al/Ti, it is possible to obtain the minimum IMC and maximum mechanical properties by offsetting the laser beam to aluminum. Whereas when the laser beam is offset to a titanium alloy, the mechanical properties are 40–50% lower than when the laser beam is offset to an aluminum alloy. When lap welding the Al/Cu joint, under the impact of the laser beam on the aluminum, using defocusing or wobbling (oscillation) of a laser beam, it is possible to increase the contact area of electrical conductivity with the tensile shear strength of 95–128 MPa.

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Section: Discussionmentioning

confidence: 99%

A Review: Laser Welding of Dissimilar Materials (Al/Fe, Al/Ti, Al/Cu)—Methods and Techniques, Microstructure and Properties

Kuryntsev

2021

Materials

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“…Undesirable stresses and deformations are even more pronounced in case of joining of thin sheets in butt configuration [7]. In the last five years, finite element modeling of the thermomechanical behavior during fusion dissimilar welding has been actively developed [7][8][9]. It involves sequential calculation of the heat flow problem (using equivalent source approach), and the mechanical one (initiation and accumulation of strains and stresses) during and after the welding operation.…”

Section: Introductionmentioning

confidence: 99%

On the mechanisms involved in the tensile strength of a dissimilar Ti6Al4V/316L laser welded assembly

Mannucci

Bolot

Tomashchuk

et al. 2021

Metall. Res. Technol.

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The aim of the present work is to analyze the thermomechanical behavior of dissimilar laser seams by means of FE modeling. The case of a Ti6Al4V/316L assembly with vanadium insert was considered. Effective mechanical properties of the main materials and cords were first estimated from NHT measurements. Modeling of the double pass laser welding process was performed first by considering shrinking of the two weld seams during manufacturing, to get the residual stress state in the welded assembly. Modeling of the tensile test was performed in a second step to study the assembly behavior during loading. In these modeling results, the mesh was the cross-section of the micrograph of the assembly itself. The corresponding stress/strain curve was calculated and results were reported for the residual stress state after manufacturing as well as a stress state close to the Ultimate Tensile Strength.

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“…This will lead to Brittle intermetallic compounds. As a result, the strength and plasticity of the welded joint are reduced and easily causes cracks [7][8][9]. Abbasi et al [10] found that the thickness of aluminum-copper intermetallics has a certain critical value on the strength and ductility of the joint; and the joint with a comprehensive performance less than 2.5μm shows an excellent comprehensive property.…”

Section: Introductionmentioning

confidence: 99%

Study on Ultrasound Welding Process of Aluminum/Copper Dissimilar Metals

Tang

Zhang

et al. 2020

Phys. Metals Metallogr.

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Aluminum/Copper dissimilar joints are widely used in electronics, automobile industry and battery manufacturing. Ultrasonic spot welding (USW), as a quality, efficient, clean and low-consumption solid phase bonding (SPB) technology, is applicable for the connections of aluminum/copper and other highly conductive and heat-conducting materials. At present, this technique has been concerned by automobile producers and lithium battery manufacturers at home and aboard. In this work, the optimal performance of the ultrasonic welding process of aluminum/copper dissimilar joints is studied. Through a single-factor test on how welding parameters (lap mode, welding pressure, welding amplitude and welding energy) influence on the quality of welding joints, it has found that the lap mode of aluminum plates on the top and copper plates on the bottom (Al/Cu) is better than that of copper plates on the top and aluminum plates on the bottom (Cu/Al), under the optimal parameters (40Psi, 45μm and 500J).

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Finite Element Modeling for the Structural Analysis of Al-Cu Laser Beam Welding

Cited by 10 publications

References 5 publications

A Review: Laser Welding of Dissimilar Materials (Al/Fe, Al/Ti, Al/Cu)—Methods and Techniques, Microstructure and Properties

A Review: Laser Welding of Dissimilar Materials (Al/Fe, Al/Ti, Al/Cu)—Methods and Techniques, Microstructure and Properties

On the mechanisms involved in the tensile strength of a dissimilar Ti6Al4V/316L laser welded assembly

Study on Ultrasound Welding Process of Aluminum/Copper Dissimilar Metals

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