Laser micro-welding technology for Cu–Al dissimilar metals and mechanisms of weld defect formation

Shi, Wenqing; Huang, Jian; Xie, Yuping; Li, Yongqiang; Fen-ju, AN

doi:10.1007/s00170-017-0814-z

Cited by 14 publications

(3 citation statements)

References 6 publications

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“…Additionally, several other works, in which micro-welding of electrical contacts [ 85 , 86 , 87 , 88 ], the influence of the choice of filler material and welding modes on the microstructure and mechanical properties of welded joints [ 72 , 89 , 90 , 91 , 92 ], studies of the optimal offset of the heat source based on the diagram phase state [ 93 ] are considered, are dedicated to laser welding of aluminum and copper.…”

Section: Laser Welding Of Aluminum Alloys To Coppermentioning

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: Laser Welding Of Aluminum Alloys To Coppermentioning

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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“…It is worth noting that although there are many viable options for interlayer materials, the use of copper as an interlayer between SS and Al has not been significantly used, thus, far. In addition, it has been found that the Cu is quite compatible to both SS and Al in fusion joining process (Abima et al , 2019; Rodrigues et al , 2022; Shi et al , 2017; Vyas et al , 2022). Apart from this, the metallurgical behaviour of SS–Cu and Cu–Al interface for multi-layered structure have not been reported yet.…”

Section: Introductionmentioning

confidence: 97%

Influence of copper interlayer on the interface characteristics of stainless steel–aluminium transitional structure in wire arc directed energy deposition

Paul,

Mukherjee,

Sahu

2023

RPJ

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Purpose The purpose of this study is to investigate the deposition of SS–Al transitional wall using the wire arc directed energy deposition (WA-DED) process with a Cu interlayer. This study also aims to analyse the metallographic properties of the SS–Cu and Al–Cu interfaces and their mechanical properties. Design/methodology/approach The study used transitional deposition of SS–Al material over each other by incorporating Cu as interlayer between the two. The scanning electron microscope analysis, energy dispersive X-ray analysis, X-ray diffractometer analysis, tensile testing and micro-hardness measurement were performed to investigate the interface characteristics and mechanical properties of the SS–Al transitional wall. Findings The study discovered that the WA-DED process with a Cu interlayer worked well for the deposition of SS–Al transitional walls. The formation of solid solutions of Fe–Cu and Fe–Si was observed at the SS–Cu interface rather than intermetallic compounds (IMCs), according to the metallographic analysis. On the other hand, three different IMCs were formed at the Al–Cu interface, namely, Al–Cu, Al2Cu and Al4Cu9. The study also observed the formation of a lamellar structure of Al and Al2Cu at the hypereutectic phase. The mechanical testing revealed that the Al–Cu interface failed without significant deformation, i.e. < 4.73%, indicating the brittleness of the interface. Originality/value The study identified the formation of HCP–Fe at the SS–Cu interface, which has not been previously reported in additive manufacturing literature. Furthermore, the study observed the formation of a lamellar structure of Al and Al2Cu phase at the hypereutectic phase, which has not been previously reported in SS–Al transitional wall deposition.

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“…At present, there are many advanced joining technologies derived from the joining method of SiC p /Al MMCs, such as fusion welding [17][18][19] , friction stir welding [20,21] , brazing [22][23][24] , and so on. SiC p /Al MMCs were joined by fusion welding the characteristics of high heat input caused the SiC particle reinforced phase to react violently with the Al alloy matrix to form an Al 4 C 3 brittle phase, resulting in poor performance of the welded joint.…”

Section: Introductionmentioning

confidence: 99%

Nickel-plated SiCp/Al composites brazed in the air: microstructure and mechanical properties of brazed joints under different processes

Qiu,

Cheng,

Niu

et al. 2024

Weld World

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55% SiC p /ZL102 composites were surface metalized by electroless nickel plating. The Al-17Cu-8Mg-2Ni as-cast brazing alloy was treated by an ultra-cold thin strip system using a melt-spinning machine to realize the redistribution of solutes. The obtained foil-like brazing alloy has better exibility, more uniform element distribution, and higher free energy than the as-cast brazing alloy. The 55% SiC p /ZL102 composites after nickel plating were brazed by different brazing processes in the air. The Ni-P coating effectively inhibited the formation of alumina lm on the composite surface. However, the presence of an oxide layer on the foil ller caused a negative effect on the Ni-P coating and hindered the diffusion between elements. SiC, Ni 2 Al 3 , and other phases were detected in the joint port. The characteristic morphologies such as furrows and massive particles indicated that the fracture behavior is brittle fracture. The maximum shear strength of the joint was 88.31 MPa at 590°C.

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Laser micro-welding technology for Cu–Al dissimilar metals and mechanisms of weld defect formation

Cited by 14 publications

References 6 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

Influence of copper interlayer on the interface characteristics of stainless steel–aluminium transitional structure in wire arc directed energy deposition

Nickel-plated SiCp/Al composites brazed in the air: microstructure and mechanical properties of brazed joints under different processes

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