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Structure changes of high-strength economically alloyed steel 09KhGN2MD (09CrMnNi2MoCu) when tempering
https://doi.org/10.22349/1994-6716-2018-93-1-15-26
Abstract
Purpose of the present investigation is to determine the optimal heat treatment parameters that ensure yield strength over 690 MPa in combination with toughness of at least 35 J/cm2 at temperature –70°C in new economically alloyed cold-resistant steel. The effect of various quenching and tempering parameters on mechanical properties, structure of steel and fracture mode of samples after impact tests at temperature –70°C has been studied. The relationship between the properties, structure and fracture mode of steel samples is shown. The optimal heat treatment parameters of new economically alloyed cold-resistant steel are determined.
Keywords
economically alloyed high-strength steel,
coldresistance,
reduction of carbon equivalent,
scanning electron microscopy,
transmission electron microscopy,
mechanical properties,
structure,
bainite,
martensite,
quenching,
tempering
Supporting agencies: 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.
About the Authors
M. V. Golubeva
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
49, Shpalernaya St, 191015 St Petersburg
Russian Federation
49, Shpalernaya St, 191015 St Petersburg
O. V. Sych
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Cand. Sc. (Eng)
49, Shpalernaya St, 191015 St Petersburg
E. I. Khlusova
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Dr Sc. (Eng)
49, Shpalernaya St, 191015 St Petersburg
G. D. Motovilina
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Cand. Sc. (Eng)
49, Shpalernaya St, 191015 St Petersburg
E. V. Sviatysheva
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
49, Shpalernaya St, 191015 St Petersburg
Russian Federation
49, Shpalernaya St, 191015 St Petersburg
S. V. Rogozhkin
NRC “Kurchatov Institute” – Institute for Theoretical and Experimental Physics; National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
Dr Sc. (Phys-Math)
25, Bolshaya Cheremushkinskaya St, 117218, Moscow;
31, Kashirskoe shosse, 115409, Moscow
A. A. Lukyanchuk
NRC “Kurchatov Institute” – Institute for Theoretical and Experimental Physics
Russian Federation
25, Bolshaya Cheremushkinskaya St, 117218, Moscow
Russian Federation
25, Bolshaya Cheremushkinskaya St, 117218, Moscow
References
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For citations:
Golubeva M.V., Sych O.V., Khlusova E.I., Motovilina G.D., Sviatysheva E.V., Rogozhkin S.V., Lukyanchuk A.A. Structure changes of high-strength economically alloyed steel 09KhGN2MD (09CrMnNi2MoCu) when tempering. Voprosy Materialovedeniya. 2018;(1(93)):15-26. (In Russ.) https://doi.org/10.22349/1994-6716-2018-93-1-15-26
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