Study of Structural Heterogeneity and Mechanical Properties of Steel Rods After Helical Rolling and Accelerated Cooling

The paper studies the influence of accelerated cooling after helical rolling on the structure and mechanical properties of X70 steel in different sections of the rod. Accelerated cooling is carried out in two modes: cooling and holding at a temperature of 530°C (mode I) and cooling to a temperature...

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Bibliographic Details
Published inRussian physics journal Vol. 67; no. 6; pp. 733 - 741
Main Authors Gordienko, A. I., Mityashina, A. O., Vlasov, I. V.
Format Journal Article
LanguageEnglish
Published Cham Springer International Publishing 2024
Springer Nature B.V
Subjects
Condensed Matter Physics
Cooling
Hadrons
Heavy Ions
Heterogeneity
Lasers
Mathematical and Computational Physics
Mechanical properties
Microhardness
Nuclear Physics
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Rods
Steel
Theoretical
bainite
microstructure
strength
Low-carbon steel
microhardness
helical rolling
accelerated cooling
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Summary:The paper studies the influence of accelerated cooling after helical rolling on the structure and mechanical properties of X70 steel in different sections of the rod. Accelerated cooling is carried out in two modes: cooling and holding at a temperature of 530°C (mode I) and cooling to a temperature of 200°C without holding (mode II). It is found that conditions of cooling affect the fraction and morphology of the bainitic phase. This in turn determines different microhardness and strength in different sections of the rods.
ISSN:1064-8887
1573-9228
DOI:10.1007/s11182-024-03173-6