Experience of Mastering Plate Production of Strength Category Sawl 450 for Deep-Water Pipes at the Vyksa Metallurgical Plant 5000 Mill

Il’inskii, V. I.; Matrosov, M. Yu.; Степанов, П. П.; Éfron, L. I.; Goli-Oglu, E. A.; Golovin, S. V.; Talanov, O. P.; Geier, V. V.

doi:10.1007/s11015-014-9865-7

Cited by 6 publications

(1 citation statement)

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“…3 , Шмаков А. В. 3 , Платов С. И. 5 1 Разработан оригинальный лабораторный стенд, позволяющий моделировать технологические скорости охлаждения горячекатаных листов в процессе контролируемой термомеханической обработки (thermo-mechanical controlled processing -TMCP).…”

Section: тепловой эффект бейнитного превращения в трубных сталях при unclassified

Thermal effect of bainitic transformation in tube steels during accelerated cooling

Лобанов¹,

Русаков²,

Urtsev³

et al. 2018

LoM

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An original laboratory bench, which allows for modeling technological rates of cooling of hot-rolled sheets in the process of controlled thermomechanical processing (TMCP) has been designed. Samples cut from an industrial sheet of 06G2MB type pipe steel used in production of large diameter pipes with strength grade X80 have been used. Time dependencies of the actual temperature at initial cooling rates of 100-500 K / s have been obtained. All processing modes resulted in almost identical structures mainly formed due to the bainitic transformation. The dispersion of structures decreased with the increase of the cooling rate. Thermotechnical calculations were carried out assuming that the temperature equalization over the sample thickness was instant. The times of transformation amounted to 1-9 s. Most of the transformation at all cooling modes occurred in conditions close to the isothermal one. The athermal nature of the bainitic transformation in TMCP was recorded. Within the observed interval of cooling rates, the temperature at the starting point of the bainitic transformation was 660-730°C. The heat effect approximately was equal to 120 kJ / kg, which is twice larger than the thermal effect of the martensite transformation for low-carbon steels. This fact suggests that the kinetics of the bainitic transformation is largely determined by the energy of the slowest process, namely, the rearrangement of carbon atoms in the austenite occurring parallelly to the shear transformation of FCC lattice into BCC one. It is assumed that energy contribution of the redistribution process of carbon atoms (if their amount is small) to the thermal effect of the bainitic transformation is comparable, at least, to the energy effect of the shear lattice rearrangement.

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Section: тепловой эффект бейнитного превращения в трубных сталях при unclassified

Thermal effect of bainitic transformation in tube steels during accelerated cooling

Лобанов¹,

Русаков²,

Urtsev³

et al. 2018

LoM

View full text Add to dashboard Cite

show abstract

Effect of Chemical Composition on the Central Segregation Heterogeneity and HIC Resistance of Rolled Plates

Шабалов

Matrosov

Kholodnyi

et al. 2018

Pipeline Steels for Sour Service

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Effect of Finish Rolling Temperature on the Texture and Fracture Resistance of Low-Carbon High-Strength Pipe Steels during Thermomechanical Treatment

Pumpyanskii,

Pyshmintsev,

Lobanov

et al. 2023

Met Sci Heat Treat

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Experience of Mastering Plate Production of Strength Category Sawl 450 for Deep-Water Pipes at the Vyksa Metallurgical Plant 5000 Mill

Cited by 6 publications

References 0 publications

Thermal effect of bainitic transformation in tube steels during accelerated cooling

Thermal effect of bainitic transformation in tube steels during accelerated cooling

Effect of Chemical Composition on the Central Segregation Heterogeneity and HIC Resistance of Rolled Plates

Effect of Finish Rolling Temperature on the Texture and Fracture Resistance of Low-Carbon High-Strength Pipe Steels during Thermomechanical Treatment

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