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Effect of Tempering on the Structure and Properties of Wedded Joints of Low-Alloy High-Strength Steels Formed by Gas Tungsten Arc Welding

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Metal Science and Heat Treatment Aims and scope

The effect of tempering used to relieve welding stresses on the microstructure and mechanical properties of the weld metal in welded joints from low-alloy high-strength steel of type 12KhN2MD with a yield strength of 750 MPa is considered. The phase composition and the morphology of the structural components, the ultimate strength and the yield strength, the elongation, the contraction, and the impact energy of specimens of welded joints are determined. It is shown that the high tempering treatment of the welded joints from the high-strength steel is quite efficient.

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The studies have been performed with the use of research facilities of the collaborative center “Composition, Structure and Properties of Structural and Functional Materials” of the “Kurchatov Institute – CRISM Prometey” Research Center and supported financially by the Ministry of Science and Higher Education of Russia within agreement No. 13.TsKP.21.0014 (075-11-2021-068), unique identifier RF2296.61321X0014.

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Authors and Affiliations

  1. Gorynin Central Research Institute of Structural Materials “Prometey” of the National Research Center “Kurchatov Institute,” , St. Petersburg, Russia

    N. A. Luk’yanova, P. V. Mel’nikov & O. I. Gribkov

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  1. N. A. Luk’yanova
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  2. P. V. Mel’nikov
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  3. O. I. Gribkov
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Correspondence to N. A. Luk’yanova.

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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov No. 10, Pp. 69 – 74, October 2022

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Luk’yanova, N.A., Mel’nikov, P.V. & Gribkov, O.I. Effect of Tempering on the Structure and Properties of Wedded Joints of Low-Alloy High-Strength Steels Formed by Gas Tungsten Arc Welding. Met Sci Heat Treat 64, 602–607 (2023). https://doi.org/10.1007/s11041-023-00858-6

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  • DOI: https://doi.org/10.1007/s11041-023-00858-6

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