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Structure and Impact Strength of Weld Joints Manufactured from a Pipe Steel with the Use of Hybrid Laser-Arc Welding

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Abstract

The weld joints of pipes with a diameter of 1420 mm and a pipe-wall thickness of 30 mm manufactured by two different technologies have been studied. These technologies were (i) combining the laser arc welding when making a root weld with the subsequent submerged arc welding when applying cap welds and (ii) the method of double-sided submerged arc welding. It has been shown that the first technology leads to the formation of a bainite-based disperse structure in weld joints, thereby providing a tough-ductile character of fracture and an increased level of impact strength for different positions of a notch with respect to the center of a weld joint.

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Funding

This study was performed within the state task from the Ministry of Science and Higher Education of Russia (project “Structure” no. AAAA-A18-118020190116-6).

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Authors and Affiliations

  1. Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 620108, Ekaterinburg, Russia

    N. A. Tereshchenko & I. L. Yakovleva

  2. Chelyabinsk Pipe Rolling Plant, 454129, Chelyabinsk, Russia

    M. A. Fedorov & A. B. Gizatullin

  3. Gazprom VNIIGAZ, 142717, Razvilka, Leninskii okrug, Moscow oblast, Russia

    T. S. Esiev

Authors
  1. N. A. Tereshchenko
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  2. I. L. Yakovleva
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  3. M. A. Fedorov
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  4. A. B. Gizatullin
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  5. T. S. Esiev
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Corresponding author

Correspondence to N. A. Tereshchenko.

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Translated by E. Glushachenkova

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Tereshchenko, N.A., Yakovleva, I.L., Fedorov, M.A. et al. Structure and Impact Strength of Weld Joints Manufactured from a Pipe Steel with the Use of Hybrid Laser-Arc Welding. Phys. Metals Metallogr. 123, 535–541 (2022). https://doi.org/10.1134/S0031918X22050167

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  • DOI: https://doi.org/10.1134/S0031918X22050167

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