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Structure and Properties of the Heat-Affected Zone of Low-Alloy Cold-Resistant Steel for Arctic Application

  • METAL SCIENCES. METALLURGY
  • Published:
Inorganic Materials: Applied Research Aims and scope

Abstract—The paper presents the results of a comprehensive study of structural and property changes in the most dangerous regions of the heat-affected zone of low-alloy cold-resistant steel with a guaranteed yield strength of 355–390 MPa before and after the post-welding tempering, including those caused by the combined impact of heating temperature under tempering and deformation, compared to base metal. The simulation was performed using a DIL 805 dilatometer and a Gleeble 3800 complex. The results of the investigation of the structure and properties of actual welded joints after welding with different rates of energy input (3.5 and 6 kJ/mm) are presented.

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Notes

  1. Ceq = C + (Mo + Cr + V)/5 + (Cu + Ni)/15 + Mn/6, wt %.

  2. Pcm = C + (Mo + Cr + Cu)/20 + Si/30 + Ni/60 + Mo/15 + V/10, wt %.

  3. The studies were performed jointly with G.D. Motovilina, PhD (Engineering).

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ACKNOWLEDGMENTS

Experimental studies were performed using the equipment of the Composition, Structure, and Properties of Structural and Functional Materials Center for Collective Use of the National Research Center Kurchatov Institute—CRISM Prometey with financial support of the Ministry of Education and Science of the Russian Federation, agreement no. 14.595.21.0004 (RFMEFI59517X0004).

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Authors and Affiliations

  1. National Research Center Kurchatov Institute—CRISM Prometey, 191015, St Petersburg, Russia

    O. V. Sych, E. I. Khlusova, U. A. Pazilova & E. A. Yashina

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  1. O. V. Sych
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  2. E. I. Khlusova
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  3. U. A. Pazilova
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  4. E. A. Yashina
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Correspondence to O. V. Sych.

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Translated by E. Petrova

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Sych, O.V., Khlusova, E.I., Pazilova, U.A. et al. Structure and Properties of the Heat-Affected Zone of Low-Alloy Cold-Resistant Steel for Arctic Application. Inorg. Mater. Appl. Res. 9, 1076–1089 (2018). https://doi.org/10.1134/S2075113318060321

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