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Metals 2018, 8(2), 138; https://doi.org/10.3390/met8020138

The Effect of Interlayer Materials on the Joint Properties of Diffusion-Bonded Aluminium and Magnesium

1
Institute of Joining and Assembly, Chemnitz University of Technology, D-09107 Chemnitz, Germany
2
Institute of Materials Science and Engineering, Chemnitz University of Technology, D-09107 Chemnitz, Germany
3
Institute of Physics, Chemnitz University of Technology, D-09107 Chemnitz, Germany
*
Author to whom correspondence should be addressed.
Received: 15 December 2017 / Revised: 8 February 2018 / Accepted: 12 February 2018 / Published: 17 February 2018
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Abstract

Diffusion bonding is a well-known technology for a wide range of advanced joining applications, due to the possibility of bonding different materials within a defined temperature-time-contact pressure regime in solid state. For this study, aluminium alloys AA 6060, AA 6082, AA 7020, AA 7075 and magnesium alloy AZ 31 B are used to produce dissimilar metal joints. Titanium and silver were investigated as interlayer materials. SEM and EDXS-analysis, micro-hardness measurements and tensile testing were carried out to examine the influence of the interlayers on the diffusion zone microstructures and to characterize the joint properties. The results showed that the highest joint strength of 48 N/mm2 was reached using an aluminium alloy of the 6000 series with a titanium interlayer. For both interlayer materials, intermetallic Al-Mg compounds were still formed, but the width and the level of hardness across the diffusion zone was significantly reduced compared to Al-Mg joints without interlayer. View Full-Text
Keywords: diffusion bonding; aluminum; magnesium; interlayer; titanium; silver; PVD-coating; microstructure; tensile testing; fracture surface analysis diffusion bonding; aluminum; magnesium; interlayer; titanium; silver; PVD-coating; microstructure; tensile testing; fracture surface analysis
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Habisch, S.; Böhme, M.; Peter, S.; Grund, T.; Mayr, P. The Effect of Interlayer Materials on the Joint Properties of Diffusion-Bonded Aluminium and Magnesium. Metals 2018, 8, 138.

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