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Weldability of Novel Fe-Mn High-Strength Steels for Automotive Applications

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Abstract

High-Mn austenitic steels with TWIP and TRIP effect are characterized by an exceptional combination of high plasticity and high strength making them ideal for use in crash-relevant automobile components. At this point, European and international steel producers are facing the market launch of these steels, without detailed information regarding their weldability. This paper presents results from a publicly funded research project concerning the weldability of different systems of uncoated Fe-Mn alloys for gas metal arc welding. The different alloying concepts were produced by the Max Planck Institute for Iron Research GmbH in Düsseldorf specifically for this research project. For gas metal arc welding some newly developed metal cored wires were used and the heat input was varied by using different arc welding processes (short arc, cold metal transfer, cold metal transfer + pulsed arc). In addition to the metallurgical characteristics of the base metals and welds (segregation behaviour, grain size) the paper presents results on the quality of the welds depending on welding process and filler material.

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Authors and Affiliations

  1. Institute of Materials and Joining Technology, Otto von Guericke University, Magdeburg, Germany

    Daniel Keil &  Manuela Zinke

  2. Institute of Joining and Welding, Braunschweig University of Technology, Germany

    Helge Pries

Authors
  1. Daniel Keil
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  2. Manuela Zinke
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  3. Helge Pries
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Keil, D., Zinke, M. & Pries, H. Weldability of Novel Fe-Mn High-Strength Steels for Automotive Applications. Weld World 55, 21–30 (2011). https://doi.org/10.1007/BF03321539

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  • DOI: https://doi.org/10.1007/BF03321539

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