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Structure formation of nitrogen-containing austenitic 04Kh20N6G11M2AFB steel. Part 1: Influence of deformation temperature and strain rate on the dynamic recrystallization
https://doi.org/10.22349/1994-6716-2018-94-2-00-00
Abstract
The paper determines values of the deformation threshold necessary for the initiation and development of dynamic recrystallization in the investigated deformation temperature and strain rate. Analysis of diagrams shows that the deformation resistance increases with decreasing of temperature, while a weak peak is observed at temperature 1000–1200°C, when dynamic recrystallization starts. The structure of high-strength corrosion-resistant nitrogen-containing austenitic steel 04Kh20N6G11M2AFB after hot deformation with strain rate 0.1, 1.0 and 10 s-1 in the temperature range 900–1200°С has been studied by EBSD analysis and transmission electron microscopy.
Keywords
nitrogen-containing austenitic steel,
EBSD analysis,
structure,
dynamic recrystallization,
hot deformation,
strain rate,
deformation resistance
Supporting agencies: Experimental microscopic studies were performed on the equipment of the Center for Collective Use of Mikheev Institute of Metal Physics of Ural Branch of the RAS (“Structure”, No 01201463331), Experimental studies were performed on the equipment of the laboratory of the Test and Technical Complex of Irradiated and Radionuclide Materials and the Center for Collective Use “Composition, Structure and Properties of Structural and Functional Materials” of the NRC “Kurchatov Institute” – CRISM “Prometey with financial support of the Ministry of Education and Science of Russian Federation within the framework of the agreement 14.595.21.0004, unique identifier RFMEFI59517X0004.
About the Authors
O. V. Fomina
NRC “Kurchatov Institute” – Central Research Institute of Structural Materials “Prometey”
Russian Federation
Russian Federation
Cand. Sci (Eng)
49, Shpalernaya St., 191015, St. Petersburg
T. V. Vikhareva
NRC “Kurchatov Institute” – Central Research Institute of Structural Materials “Prometey”
Russian Federation
49, Shpalernaya St., 191015, St. Petersburg
Russian Federation
49, Shpalernaya St., 191015, St. Petersburg
V. V. Sagaradze
Mikheev Institute of Metal Physics of Ural Branch RAS
Russian Federation
Russian Federation
Dr. Sci (Eng)
18, Sofia Kovalevskaya St, 620990, Ekaterinburg
N. V. Kataeva
Mikheev Institute of Metal Physics of Ural Branch RAS
Russian Federation
Russian Federation
Cand. Sci (Eng)
18, Sofia Kovalevskaya St, 620990, Ekaterinburg
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Review
For citations:
Fomina O.V., Vikhareva T.V., Sagaradze V.V., Kataeva N.V. Structure formation of nitrogen-containing austenitic 04Kh20N6G11M2AFB steel. Part 1: Influence of deformation temperature and strain rate on the dynamic recrystallization. Voprosy Materialovedeniya. 2018;(2(94)):7-21. (In Russ.) https://doi.org/10.22349/1994-6716-2018-94-2-00-00
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