&lt;title&gt;Laser micro welding of copper and aluminium using filler materials&lt;/title&gt;

Eßer, Gerd; Mys, Ihor; Schmidt, Michael

doi:10.1117/12.596330

Cited by 13 publications

(6 citation statements)

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“…Similar results confirming the influence of Ag on the joint strength have been reported by Esser et al [108]. The laser beam offset is recommended to restrict the growth of intermetallics in butt laser welding of aluminum and copper, quite similar to the proposed earlier for butt welding of steel to Cu.…”

supporting

confidence: 88%

A review on dissimilar laser welding of steel-copper, steel-aluminum, aluminum-copper, and steel-nickel for electric vehicle battery manufacturing

Sadeghian

Iqbal

2022

Optics & Laser Technology

171

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supporting

confidence: 88%

A review on dissimilar laser welding of steel-copper, steel-aluminum, aluminum-copper, and steel-nickel for electric vehicle battery manufacturing

Sadeghian

Iqbal

2022

Optics & Laser Technology

171

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“…The texture of Ti-6Al-4V filler weldment is shown in Figure 12(b), and it can be inferred from the results that the basal plane is more oriented towards normal axis in this case. However, plane (11)(12)(13)(14)(15)(16)(17)(18)(19)(20) is nearly oriented towards transverse axis, while, the plane (10-10) direction is showing very weak texture against transverse or normal axes. Since plane (0001) is the closest packed direction in hcp, therefore, in Ti-6Al-4V filler weldment, deformation will start to occur parallel to normal direction of the weld nugget.…”

Section: Texture Analysismentioning

confidence: 94%

“…It can be observed from Figure 12(a) that in the FZ of the weldment with Ti-5Al-2.5Sn filler, the basal plane is more oriented towards the transverse axis of the weld nugget. Furthermore, plane (11)(12)(13)(14)(15)(16)(17)(18)(19)(20) is nearly oriented towards normal direction of the weld nugget. In addition, plane (10-10) direction is showing very weak texture in the transverse or normal directions.…”

Section: Texture Analysismentioning

confidence: 98%

“…14 Selection of filler material is based on the type of welded joint and its geometry, thereby the base materials having a low risk of cracking and may not require additional alloying elements. 14 Esser et al 15 used different fillers and concluded that using tin and silver as fillers improved the mechanical stability of static and dynamic Cu/Al joints. Weigl et al 16 concluded that the brittle phases in the FZ can be reduced using adapted fillers like Si, which is compatible with both metals in laser micro welding of direct Cu-Al joint.…”

Section: Introductionmentioning

confidence: 99%

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Influence of filler material on the microstructure, mechanical properties, and residual stresses in tungsten inert gas welded Ti-5Al-2.5Sn alloy joints

Iltaf

Khan

Shehbaz

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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The microstructure and defects in the weld zone affect the weldment characteristics. One way to improve the microstructure and reduce the defects in the weld zone is by using a filler during welding which influences the physical, chemical, and mechanical properties of the manufactured component. In the present study, tungsten inert gas (TIG) was used to weld Ti-5Al-2.5Sn alloy using different titanium alloy fillers; Ti-6Al-4V, Ti-5Al-2.5Sn, and autogenous weldments were also produced. The welded joints were characterized in terms of their microstructure, mechanical properties, and residual stresses in its various regions. The weldment with Ti-6Al-4V as filler exhibited a higher proportion of α′ martensite in fusion zone, as compared to the welded joint with Ti-5Al-2.5Sn alloy as filler, owing to the higher proportions of β stabilizers present in Ti-6Al-4V alloy. The α’ martensite was present in basketweave and acicular morphology in all the weldments, with and without fillers. Ti-6Al-4V filler welded joint showed higher tensile strength (approximately 1144 MPa) and relatively higher hardness than Ti-5Al-2.5Sn filler welded joint (approximately 1027 MPa) and autogenous weldment (approximately 770 MPa), due to increased amount of martensite in its fusion zone. As compared to the weldment produced with Ti-5Al-2.5Sn filler, the welded joint produced without filler and with Ti-6Al-4V as a filler had more compressive residual stresses at surface (approximately 25% higher), leading to less amount of pile up after nanoindentation. This was attributed to the generation of compressive strains due to martensitic transformations in the fusion zone of both these weldments.

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“…To enhance the ductility of the laser joint, Esser et al (2004) and Mys and Schmdit (2006) have investigated the use of filler foil between the aluminum and copper. They reported that the use of a filler material that has a metallurgical affinity to both aluminum and copper such as nickel, silver and tin between the aluminum and copper can lead to a significant improvement in the mechanical properties of the joint due to the formation of a ductile ternary alloys.…”

Section: Introductionmentioning

confidence: 99%

Laser micro-welding of aluminum and copper with and without tin foil alloy

et al. 2011

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In this paper continuous laser welding of two dissimilar materials, aluminum and copper, was investigated. The aluminum and the copper utilized were Al3003-H14 and Cu110-H00, respectively. Two different sets of samples were laser welded; one in which a filler material, tin foil alloy (S-bond 220), was sandwiched between the aluminum and the copper and another set in which the aluminum and copper were directly welded without any filler. The foil alloy was utilized to enhance the compatibility of the two metals; aluminum and copper, reducing the brittleness of the intermetallic compound that may form and, subsequently, enhance the mechanical properties. The welding was carried out using an IPG 500 SM fiber laser. The length of the laser joint produced was 20 mm and the width was about 200 m. The strength of the joint was evaluated by conducting the lap shear stress test. Samples in which filler foil was used exhibited a better performance in the lap shear stress test (an average of 780 N) than the samples without tin foil (an average of 650 N). The improvement in the lap shear test could be attributed to the positive effects of the filler on enhancing the compatibility of the intermetallic compound formed via diffusion. The fracture surface of both types of joints (with and without filler) was characterized using scanning electron microscope equipped with energy-dispersive X-ray (EDAX). To understand the failure initiation and propagation of the samples under tension, a finite element (FE) model was developed for the samples created with no filler material. The failure mechanism predicted from the FE model matches reasonably well with the experimental observations from EDAX analysis

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<title>Laser micro welding of copper and aluminium using filler materials</title>

Cited by 13 publications

References 0 publications

A review on dissimilar laser welding of steel-copper, steel-aluminum, aluminum-copper, and steel-nickel for electric vehicle battery manufacturing

A review on dissimilar laser welding of steel-copper, steel-aluminum, aluminum-copper, and steel-nickel for electric vehicle battery manufacturing

Influence of filler material on the microstructure, mechanical properties, and residual stresses in tungsten inert gas welded Ti-5Al-2.5Sn alloy joints

Laser micro-welding of aluminum and copper with and without tin foil alloy

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