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Evolution of Microstructure in the Thermomechanically Affected Zone of Welded Joints of Medium-Carbon Steels in the Process of Rotary Friction Welding

  • WELDED JOINTS
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Metal Science and Heat Treatment Aims and scope

The methods of transmission and scanning electron microscopy are used to study the evolution of the structure of a welded joint of steels 32G2 and 40KhN in the thermomechanically affected zone (TAZ) under rotary friction welding (RFW). EBSD analysis is used to certify the microstructure in different parts of the TAZ and to calculate the densities of the low- and high-angle boundaries. It is shown that complex processes of dynamic recrystallization combining several mechanisms develop in all these regions of the TAZ. Typical differences in the structures of the mobile (steel 40KhN) and immobile (steel 32G2) parts of the billets are described.

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Authors and Affiliations

  1. Orenburg State University, Orenburg, Russia

    E. Yu. Priymak & A. S. Atamashkin

  2. Institute of Metals Physics of the Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russia

    I. L. Yakovlev

  3. Drilling Equipment Plant, Orenburg, Russia

    E. Yu. Priymak & A. V. Stepanchukova

Authors
  1. E. Yu. Priymak
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  2. I. L. Yakovlev
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  3. A. S. Atamashkin
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  4. A. V. Stepanchukova
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Corresponding author

Correspondence to E. Yu. Priymak.

Additional information

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 12, pp. 9 – 16, December, 2020.

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Priymak, E.Y., Yakovlev, I.L., Atamashkin, A.S. et al. Evolution of Microstructure in the Thermomechanically Affected Zone of Welded Joints of Medium-Carbon Steels in the Process of Rotary Friction Welding. Met Sci Heat Treat 62, 731–737 (2021). https://doi.org/10.1007/s11041-021-00630-8

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  • DOI: https://doi.org/10.1007/s11041-021-00630-8

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