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Structural and Mechanical Features of Laser-Welded Joints of Zinc-Coated Advanced Steel Sheets

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We analyze the quality of laser-welded bodywork steel sheets. The welding was done by a CO2 laser. We studied the welds made on steel sheets of advanced grades: high-strength low-alloy steel, dual phase steel, and multiphase transformed steel with induced plasticity. Both sides of steel sheets were gal- vanized. The quality of welded joints was assessed by visual inspection. We performed the tensile tests of the specimens, including fracture tests. The Vickers microhardness was evaluated in the individual re- gions of joints. The macro- and microstructural analyses were performed by microscopy. The parame- ters recommended by the International Institute of Welding were used for welding. According to the da- ta of nondestructive and destructive tests, the analyzed welds were classified as satisfactory.

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Authors and Affiliations

  1. Department of Technology and Materials, Technical University of Košice, Košice, Slovakia

    J. Viňáš, J. Brezinová & J. Brezina

  2. Pulyui Ternopil National Technical University, Ternopil, Ukraine

    P. O. Maruschak

Authors
  1. J. Viňáš
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  2. J. Brezinová
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  3. J. Brezina
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  4. P. O. Maruschak
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Corresponding author

Correspondence to P. O. Maruschak.

Additional information

Published in Fizyko-Khimichna Mekhanika Materialiv, Vol. 55, No. 1, pp. 47–51, January–February, 2019

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Viňáš, J., Brezinová, J., Brezina, J. et al. Structural and Mechanical Features of Laser-Welded Joints of Zinc-Coated Advanced Steel Sheets. Mater Sci 55, 46–51 (2019). https://doi.org/10.1007/s11003-019-00250-x

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  • DOI: https://doi.org/10.1007/s11003-019-00250-x

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