Electromagnetic impact welding of Mg to Al sheets

Kore, Sachin D.; Imbert, J.; Worswick, Michael J.; Zhou, Yang

doi:10.1179/136217109x449201

Cited by 71 publications

(24 citation statements)

References 21 publications

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“…Numerical investigations performed by Uhlmann and Ziefle (2010) lead to the same conclusion. Experimental investigations and according microstructural analysis and XRD presented in Kore et al (2009b) certify that also in the case of welding aluminum to magnesium no eutectic microstructure and no intermetallic phases were found. Therefore, it is concluded that the temperatures are not high enough to cause melting, in the regarded case.…”

Section: Impulse Welded Jointsmentioning

confidence: 71%

“…Here, the electrical conductivity of the workpiece in principle is high enough for direct forming, but the disadvantageous ratio of skin depth and sheet thickness requires the application of additional drivers. For the same reason aluminum drivers are applied in Kore et al (2009b), where the feasibility of electromagnetic welding of magnesium to aluminum is proved (Fig. 27).…”

Section: Impulse Welded Jointsmentioning

confidence: 99%

See 1 more Smart Citation

Electromagnetic forming—A review

Psyk

Risch

Kinsey

et al. 2011

Journal of Materials Processing Technology

812

260

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Section: Impulse Welded Jointsmentioning

confidence: 71%

Section: Impulse Welded Jointsmentioning

confidence: 99%

Electromagnetic forming—A review

Psyk

Risch

Kinsey

et al. 2011

Journal of Materials Processing Technology

812

260

View full text Add to dashboard Cite

“…Numerical simulations considering the temperature development during electromagnetic pulse welding support this theory [7] [8]. An experimental confirmation of the absence of eutectic microstructure via microstructural analysis is given in [9]. However, other publications suggest that especially at high capacitor charging energies very locally high temperatures can lead to melting and solidification, which at least contributes to the weld formation [10] [11].…”

Section: Introductionmentioning

confidence: 91%

Effect of the Welding Parameters on the Structural and Mechanical Properties of Aluminium and Copper Sheet Joints by Electromagnetic Pulse Welding

Kwee¹,

Psyk²,

Faes³

2016

WJET

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Aluminium-copper hybrid parts, as a substitution to copper parts, result in weight and cost reduction, and are relevant in applications related to the electronic, heating and cooling sector. However, aluminium to copper joined by thermal welding processes presents challenges in terms of achieving good joint quality. This is attributed to their dissimilar mechanical and thermal properties which result in large stress gradients during heating. This study investigated joining of aluminium to copper sheets by electromagnetic pulse welding, which is a solid-state process that uses electromagnetic forces for joining of dissimilar materials. Hybrid sheet welds were obtained for all parameters conditions, selected according to a Taguchi L18 design. The structural and mechanical characteristics were examined and related to the welding parameters by means of a Pareto analysis and response graphs. The welded zone started with a wavy interface with interfacial layers and defects and evolved to a flat interface without interfacial layers. The maximum transferable force depended on the minimum specimen thickness and the strength of the hybrid sheet weld. In case of aluminium sheet thickness reduction, the maximum transferable force was linearly correlated with the aluminium sheet thickness. High quality joints were obtained for no aluminium sheet thickness reduction and for a sheet weld strength which was at least as high as that of the base material. The most effective way to increase the transferable force was to lower the initial gap and to increase the free length, which resulted in no aluminium sheet thickness reduction. Alternatively, the use of a rounded spacer decreased the effect of the aluminium sheet thickness on the transferable force. An increase in weld width was achieved for an increase in capacitor charging energy and gap, whereas an increase in weld length was obtained for a de-

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“…When the formation of Mg-Al intermetallics was controlled, the property of the joint was controlled as well. [10] Laser weld bonding (LWB) is a new welding technique that was put forward as an alternative to pulse laser welding and adhesive bonding. It is used to join a Mg alloy to an Al alloy successfully.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties Analysis of Laser Welding and Laser Weld Bonding Mg to Al Joints

Liu

Wang

2010

Metall Mater Trans A

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Laser welding and laser weld bonding (LWB) Mg to Al joints were obtained in different welding parameters. The penetrations and microstructures of these kinds of joints changed with the increasing of pulse laser power density. Both laser welding and LWB Mg to Al joints with the best properties were obtained in conductive welding mode. In laser welding Mg to Al joint, several intermetallics formed at the bottom of the fusion zone, where some cracks were generated. In laser weld bonding Mg to Al joint, the decomposition of the adhesive caused a baffle effect on the diffusion between the Mg and the Al. The intermetallics formed in the middle of the fusion zone, and the thickness of Mg 17 Al 12 layer was approximately 10 to 20 lm and the Mg 2 Al 3 layer was less than 5 lm, which influenced the property of the joint less.

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Electromagnetic impact welding of Mg to Al sheets

Cited by 71 publications

References 21 publications

Electromagnetic forming—A review

Electromagnetic forming—A review

Effect of the Welding Parameters on the Structural and Mechanical Properties of Aluminium and Copper Sheet Joints by Electromagnetic Pulse Welding

Microstructure and Properties Analysis of Laser Welding and Laser Weld Bonding Mg to Al Joints

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