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Structure Formation of the Nitrogen-Containing Austenitic 04Kh20N6G11M2AFB Steel at Hot Deformation: Part I. Influence of Deformation Temperature and Strain Rate on the Process of Dynamic Recrystallization

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

Abstract

This work determines the values of the deformation threshold necessary for the initiation and development of dynamic recrystallization within the investigated deformation temperature and strain rate for high-strength corrosion-resistant nitrogen-containing austenitic 04Kh20N6G11M2AFB steel. Analysis of diagrams shows that the deformation resistance increases with the decrease in the deformation temperature. A faint peak is observed at 1000–1200°C; it indicates the start of dynamic recrystallization. The structure of high-strength corrosion-resistant nitrogen-containing austenitic 04Kh20N6G11M2AFB steel after hot deformation with the strain rate of 0.1, 1.0, and 10 s–1 within the temperature range of 900–1200°С is studied by the EBSD analysis and transmission electron microscopy.

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ACKNOWLEDGMENTS

Electron microscope investigations were performed at the Center for Collective Use of the Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences (“Structure,” no. АААА-А18-118020190116-6).

Experimental studies were performed by using the equipment of the Center for Collective Use Composition, Structure, and Properties of Structural and Functional Materials of the National Research Center Kurchatov Institute—CRISM Prometey under the financial support of the Ministry of Education within the framework of agreement 14.595.21.0004, unique identifier RFMEFI59517X0004.

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Authors and Affiliations

  1. National Research Center Kurchatov Institute—Central Research Institute of Structural Materials Prometey, 191015, St. Petersburg, Russia

    O. V. Fomina & T. V. Vikhareva

  2. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 620990, Yekaterinburg, , , Russia

    V. V. Sagaradze & N. V. Kataeva

Authors
  1. O. V. Fomina
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  2. T. V. Vikhareva
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  3. V. V. Sagaradze
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  4. N. V. Kataeva
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Correspondence to O. V. Fomina.

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Translated by E. Grishina

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Fomina, O.V., Vikhareva, T.V., Sagaradze, V.V. et al. Structure Formation of the Nitrogen-Containing Austenitic 04Kh20N6G11M2AFB Steel at Hot Deformation: Part I. Influence of Deformation Temperature and Strain Rate on the Process of Dynamic Recrystallization. Inorg. Mater. Appl. Res. 9, 1060–1069 (2018). https://doi.org/10.1134/S2075113318060278

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