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Comparison Between Co2 — and Nd:Yag-Laser Beam Welding of High-Strength Crmnni Steels for the Automotive Industry

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Abstract

Austenitic and austenitic-ferritic CrMnNi-stainless steels are suitable materials in the transport and automotive industry due to their high corrosion resistance and high strength that allows weight and cost savings. This study focuses on the laser weldability of a commercial lean duplex and an austenitic high manganese stainless steel. The impact of different laser sources, i.e. a 5 kW CO2 — and a 4 kW Nd:YAG-laser, and of the main process parameters on the resulting weld quality will be investigated. One important aspect will concern the appearance of weld defects such as pores and hot cracks. The factors causing such internal imperfections will be analysed in order to find effective methods for preventing them. Weld microstructure and the associated corrosion and mechanical properties will be assessed with different techniques and adequate process parameters for high quality welds will be determined. The advantages and limitations of the applied welding processes will be evaluated for future applications.

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Authors and Affiliations

  1. Division present name of division 9.3 Welding Technology, BAM Federal Institute for Materials, Research and Testing, Germany

    Vanessa Quiroz, A. Gumenyuk & Michael Rethmeier

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  1. Vanessa Quiroz
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  2. A. Gumenyuk
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  3. Michael Rethmeier
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Quiroz, V., Gumenyuk, A. & Rethmeier, M. Comparison Between Co2 — and Nd:Yag-Laser Beam Welding of High-Strength Crmnni Steels for the Automotive Industry. Weld World 56, 129–142 (2012). https://doi.org/10.1007/BF03321403

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