Influence of vanadium, niobium and boron on kinetics of austenite recrystallization of steels with different strength levels under hot deformation conditions

Author:

Kniazyuk T. V.1,Novoskoltsev N. S.1,Khlusova E. I.1,Zisman A. A.1

Affiliation:

1. NRC “Kurchatov Institute” – CRISM “Prometey”

Abstract

Summarized results of research of the dynamic and static austenite recrystallization kinetics of low-carbon low-alloy and alloyed steels of strength classes 420, 620, 690, 750 and 890 and medium-carbon steels of strength class 1700 containing different amounts of vanadium, niobium and boron are presented. Studies were carried out by the plasmetric method under deformation conditions close to hot rolling. It was found that vanadium has a weak effect on recrystallization, and niobium in all the studied steels significantly slows it down in the hot rolling temperature range, regardless of the total doping level; microalloying of steels with boron leads to acceleration of austenite recrystallization.

Publisher

FSUE CRISM Prometey

Subject

General Earth and Planetary Sciences,General Environmental Science

Reference12 articles.

1. Zisman , A.A., Soshina , T.V., Khlusova , E.I., Postroenie i ispolzovanie kart strukturnykh izmenenii pri goryachei deformatsii austenita nizkouglerodistoi stali 09KhN2MDF dlya optimizatsii promyshlennykh tekhnologii [Construction and use of maps of structural changes during hot deformation of austenite of low-carbon steel 09KhN2MDF for optimization of industrial technologies], Voprosy Materialovedeniya, 2013, No 1(73), pp. 37–48.

2. Zisman , A.A., Soshina , T.V., Khlusova , E.I., Vliyanie mikrolegirovaniya niobiem na rekristallizatsionnye protsessy v austenite nizkouglerodistykh legirovannykh stalej [Effect of niobium microalloying on recrystallization protsesses in austenite of low-carbon alloy steels], Voprosy Materialovedeniya, 2013, No 1(73), pp. 31–36.

3. Kniazyu k , T.V., Novoskoltsev, N.S., Zisman , A.A., Khlusova , E.I., Influence of niobium microalloying on the kinetics of static and dynamic recrystallization during hot rolling of medium-carbon highstrength steels, Inorganic Materials: Applied Research, 2020, No 6(11), pp. 1325–1332. https://doi.org/10.22349/1994-6716-2020-101-1-05-15

4. Kniazyu k , T.V., Zisman , A.A., Novoskoltsev, N.S., Khlusova , E.I., Anomalous Refinement of the Austenite Grain upon High-Strain-Rate Hot Deformation of Microalloyed Medium-Carbon Steel // Physics of Metals and Metallography, 2020, V. 121, No. 6, pp. 543–547. DOI: 10.1134/s0031918x20060095.

5. Kniazyu k , T.V., Zisman , A.A., Abnormal effect of strain rate on dynamic recrystallization of austenite in medium carbon steel alloyed by boron, Letters on Materials, 2022, No 12(1), pp. 71–75. https://doi.org/10.22226/2410-3535-2022-1-71-75

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