Electrical performance of laser braze-welded aluminum–copper interconnects

Solchenbach, Tobias; Plapper, Peter; Cai, Wayne

doi:10.1016/j.jmapro.2013.12.002

Cited by 100 publications

(29 citation statements)

References 9 publications

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“…For welding dissimilar materials, elaborate methods have to be applied to reduce these intermetallic compounds. For example, a laser-braze-welding process can be used for an aluminum-copper joint [32].…”

Section: Suitability Of Laser Beam Welding For Connecting Battery Cellsmentioning

confidence: 99%

Welding techniques for battery cells and resulting electrical contact resistances

Brand

Schmidt

Zaeh

et al. 2015

Journal of Energy Storage

161

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Section: Suitability Of Laser Beam Welding For Connecting Battery Cellsmentioning

confidence: 99%

Welding techniques for battery cells and resulting electrical contact resistances

Brand

Schmidt

Zaeh

et al. 2015

Journal of Energy Storage

161

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“…The joint design has effects on the welding parameters, which in turn influence the weld properties. This was demonstrated in an Al-Cu brazed joint, in which large spacing for the weld seam improved the electrical performance of the Al-Cu joint (Solchenbach et al 2014). With lap laser welding, Sujin, et al (2014) showed that the joint has complete penetration when the Al is placed above the Cu, whereas the opposite placing gave only partial penetration into the Al.…”

Section: Influence Of Welding Parametersmentioning

confidence: 97%

“…The cracking and increased electrical resistance were due to the diffusion of Cu atoms in the interface region and intermetallic compound formation. Solchenbach, et al (2014) showed a relation between the electrical resistance and the shear strength in Al-Cu laser brazed joints. As shear strength increased, the electrical resistance in the joint decreased over time, as shown in Fig.…”

Section: Physical and Mechanical Properties Of The Jointmentioning

confidence: 98%

“…Fig. 9 Relation between electrical resistance and shear strength (Solchenbach, et al, 2014) Fig. 8 Intermetallic thickness variation by (a) varying annnealing temperature and (b) varying annealing time (Wonbae, et al, 2005) Kah et al International Journal of Mechanical and Materials Engineering (2015) 10:10…”

Section: Physical and Mechanical Properties Of The Jointmentioning

confidence: 99%

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Factors influencing Al-Cu weld properties by intermetallic compound formation

Kah

Vimalraj

Martikainen

et al. 2015

Int J Mech Mater Eng

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Dissimilar welding of aluminium (Al) and copper (Cu) has many applications in the electric power, electronic and piping industries. The weldments in these applications are highly valued for their corrosion resistance, heat and electricity conducting properties. The Al-Cu joints are lighter, cheaper and have conductivity equal to that of copper alloys. Much research has investigated dissimilar welding of Al-Cu by solid-state welding and fusion welding processes with the aim of optimising the properties and strength of such dissimilar joints. The main aim of the study is to critically review the factors influencing the properties of the Al-Cu joint. The study mainly discusses about the effects of intermetallic compounds (IMC) on the properties of Al-Cu joint and their effect while in service. The effects of joining aluminium alloy 1060 with pure copper by laser welding, friction stir welding and brazing have been reviewed and compared. The review shows that the various intermetallic compound formations in the joint have both beneficial and detrimental effects. The characteristics of these intermetallic compounds vary according to the location of the phase formed. Comparison of processes and parameters for welding of Al 1060 with pure Cu shows that the formation of the intermetallic compounds and their effects on the weld properties are mainly influenced by the welding speed, heat input, the thermal properties of the base metals and the filler metal as well as the dilution between the base metal and filler metal.

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“…Limited research was conducted on contact resistance characterisation and subsequent temperature rise. Solchenbach, et al [17] reported electrical contact resistance when laser welding was used to produce Al-Cu interconnects and they obtained the lowest contact resistance and highest mechanical interface strength with the same process parameters. Contact resistance from laser welding was lowest when compared with resistance spot welding, ultrasonic welding, and soldering [9], [13].…”

Section: Introductionmentioning

confidence: 99%