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Scientific and technological bases for creation of cold-resistant steel with a guaranteed yield strength of 315–750 MPa for the Arctic. Part 2. Technology of production, structure and properties of sheet hire performance
https://doi.org/10.22349/1994-6716-2018-96-4-14-41
Abstract
On the basis of the conducted research, a complex of scientific and technological methods has been developed for various technological processes (thermomechanical processing with accelerated cooling, quenching from rolling and separate furnace heating with high-temperature tempering). The developed method provides the formation of the structure of acceptable heterogeneity and anisotropy according to different morphological and crystallographic parameters throughout the thickness of rolled products up to 100 mm from low alloy steels with a yield strength of at least 315–460 MPa and up to 60 mm from economically alloyed steels with a yield strength of at least 500–750 MPa. The paper presents results of the industrial implementation of hot plastic deformation and heat treatment schemes for the production of cold rolled steel sheet with yield strength of at least 315–750 MPa for the Arctic. The structure of sheet metal thickness is given, providing guaranteed characteristics of strength, ductility, cold resistance, weldability and crack resistance.
Keywords
low alloy steel,
economically alloyed steel,
Arc index,
thermomechanical processing,
hardening,
rolling heating,
tempering,
mechanical properties,
cold resistance,
serviceability,
crack resistance,
structure parameters,
ferrite,
bainite,
martensite
Supporting agencies: Part of the research was carried out in the framework of the project “Arctic Steel” under the state contract with the Ministry of industry and Тrade of the Russian Federation No 16411.1810190019.09.003 signed on October 20, 2016.
About the Author
O. V. Sych
NRC ”Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Cand Sc, (Eng)
49, Sphalernaya St, 191015, St Petersburg
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For citations:
Sych O.V. Scientific and technological bases for creation of cold-resistant steel with a guaranteed yield strength of 315–750 MPa for the Arctic. Part 2. Technology of production, structure and properties of sheet hire performance. Voprosy Materialovedeniya. 2018;(4(96)):14-41. (In Russ.) https://doi.org/10.22349/1994-6716-2018-96-4-14-41
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