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TLP brazing of aluminum to steel using PVD-deposited interlayer

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Abstract

The demand for hybrid material concepts is steadily growing, and especially dissimilar joints between aluminum and steel are, due to their wide dissemination, of major importance. The main obstacle for the fabrication of aluminum-steel joints using thermal processes is the embrittlement of the fusion area. In order to prevent direct contact between aluminum and iron and thus to suppress the formation of brittle iron aluminides, 3-μm thick diffusion barrier coatings, consisting of Ni or Ti, were applied onto the steel surface. Pure copper with a thickness of 3 and 6 μm, respectively, was used as a filler material, and the samples were brazed in a TLP process in a vacuum at 580 °C at varying dwell times (10…50 min). The samples brazed with Ni diffusion barriers showed a considerable formation of Fe2Al5 even at low dwell times. Furthermore, additional complex ternary phase bands have generated due to the existence of diffusion barrier elements and were detected in the interfacial area. The application of Ti showed a significant decrease of iron aluminides, and no Fe2Al5 could be detected at low dwell times, resulting in a shear strength of 42 MPa for the optimized parameters.

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References

  1. Hirsch J, Laukli HI (2010) “Aluminium in innovative light-weight car design,” Proc 12th International Conference on Aluminium Alloys, Yokohama pp. 46-53

  2. Hoffmann JM (2006) The secret to strong, reliable adhesive bonding is to start with good clean surfaces. Mach Des 12:92–98

    Google Scholar 

  3. Davis JR (1994) Aluminum and aluminum alloys. ASM International, Material Park

    Google Scholar 

  4. Ryabov V (2001) Welding of Aluminium Alloys to Steel, Harwood, (Amsterdam), pp. 63-69

  5. Lison R (1998) Wege zum Stoffschluss über Schweiß- und Lötprozesse. DVS-Verlag, Düsseldorf

    Google Scholar 

  6. Kreimeyer M (2007) Verfahrenstechnische Voraussetzungen zur Integration von Aluminium-Stahl-Mischverbunden im Kraftfahrzeugbau. Bias Verlag, Bremen

    Google Scholar 

  7. Dilthey U, Höcker F (2006) Lichtbogenfügen und Umformen von Verbindungen aus Stahl und und Aluminium. Schweissen und Schneiden 58(1):23–28

    Google Scholar 

  8. Winiowski A (2009) Structural and mechanical properties of brazed joints of stainless steel and aluminium. Arch Metall Mater 54(2):523–533

    Google Scholar 

  9. M Steffens HD, Wilden J, Möhwald K (1995) Einsatz von ionenplattierten Diffusionsbarrieren und Belotungs-systemen beim Löten von Stahl, 4th Proc. Hart- und Hochtemperaturlöten und Diffusionsschweißen, Aachen pp. 94-98

  10. Aulerich M (2004) Entwicklung von Lötverfahren zum Fügen von hybriden Mikrobauteilen, Mainz, Technical report, Lawrence Livermore National Lab., CA (United States)

  11. Sunwoo AJ (1993) Diffusion bonding of superplastic aluminum alloys, Oak Ridge, Technical report, Lawrence Livermore National Lab., CA (United States)

  12. Tillmann W, Osmanda AM, Wojarski L (2009) Diffusion brazing of Al-alloys for hybrid structures. Q J Jpn Weld Soc 27(2):179–182

    Article  Google Scholar 

  13. Tillmann W, Wojarski L, Osmanda AM (2008) Diffusionslöten von Aluminium mittels PVD applizierter Lotzusatzwerkstoffe. Mater Wiss Werkst 39(9):108–114

    Google Scholar 

  14. Shahverdi HR et al (2002) Microstructural analysis of interfacial reaction between molten aluminum and solid iron. J Mater Process Technol 124:345–352

    Article  Google Scholar 

  15. Tillmann W, Wojarski L (2010) Diffusionsfügeprozesse zur Herstellung von Werkstoffverbunden aus Al-Stahl-Hybridstrukturen. In: Bach F.-W, Plorin T, Tillmann W, (Hrsg): Kolloquium Graduiertenkolleg 1378/1—Herstellung, Bearbeitung und Qualifizierung hybrider Werkstoffsysteme. ProduktionstechnischesZentrum (PZH), Garbsen pp. 88-94

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Acknowledgments

The authors would like to thank the German Research Foundation (DFG) for the financial support. We would also like to thank the German Welding Society (DVS) for the travel grant. Likewise, we express our gratitude to Dr. Laemmerhirt for her linguistic assistance.

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Authors and Affiliations

  1. Institute of Materials Engineering, TU Dortmund University, Dortmund, Germany

    Lukas Wojarski & Wolfgang Tillmann

Authors
  1. Lukas Wojarski
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  2. Wolfgang Tillmann
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Corresponding author

Correspondence to Lukas Wojarski.

Additional information

Doc. IIW-2458, recommended for publication by Commission XVII “Brazing, Soldering, and Diffusion Bonding.”

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Wojarski, L., Tillmann, W. TLP brazing of aluminum to steel using PVD-deposited interlayer. Weld World 58, 673–680 (2014). https://doi.org/10.1007/s40194-014-0143-x

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  • DOI: https://doi.org/10.1007/s40194-014-0143-x

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