DOI: 10.52150/2522-9117-2022-36-254-264

Pliuta Valerii Leonidovych, Ph. D. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, Ukraine, 49107. ORCID: 0000-0001-6564-7866

Levchenko Gennady Vasilyevich, D. Sc. (Tech.), Professor, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, Ukraine, 49107. ORCID: 0000-0003-1173-5320

Vorobey Serhii Oleksandrovych, D. Sc. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, Ukraine, 49107. ORCID: 0000-0003-0119-3935

Nesterenko Anatolii Mykhailovych, Ph. D. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, Ukraine, 49107. ORCID: 0000-0002-1644-5472. E-mail: anatnest1946@gmail.com

STRUCTURE AND PROPERTIES OF REINFORCING ROLLED COILS BY V-ALLOYED DUAL-AND MULTI-PHASE C-MN-SI-STEEL

Summary. The aim of the work was to study the influence of vanadium doping on two- and multi-phase steels. The schemes of thermomechanically controlled rolling on the wire line of the sectional rolling mill 400/200 for the production of reinforcing wire with a diameter of 6.0 mm in rolls were studied. For the production of reinforcing wire, vanadium alloyed C – Mn – Si steels, which have two-phase (DP – ferritic-martensitic (bainite)) and multi-phase (MP – ferritic-martensitic (bainite) – pearlitic) microstructures, were used. During thermomechanical controlled rolling, TMCR charts were used, including TLH stacking head temperatures of 1024°C to 1063°C. It was established that the applied rolling modes ensure the formation of the MP microstructure. In this 6.0 mm wire, high tensile strength and ductility indicators were achieved in the bends(YS_0.2 = 530-550 MPa; TS = 785-885 MPa; El₅ = 15.0 – 29.0 %), which fully corresponded specification requirements of national standards such as ASTM A 615 (USA), JIS G 3112 (Japan) and KSD 3504 (Republic of Korea).

Keywords: thermomechanical controlled rolling, wire line, reinforcing wire in bays, V-microalloyed C-Mn-Si-steel, microstructure.

DOI: https://doi.org/10.52150/2522-9117-2022-36-254-264

For citation: Pliuta V. L., Levchenko G. V., Vorobey S. O., Nesterenko A. M. Structure and properties of reinforcing rolled coils by v-alloyed dual-and multi-phase C-Mn-Si-steel. Fundamental and applied problems of ferrous metallurgy. 2022. Collection 36. P. 254-264. (In English). https://doi.org/10.52150/2522-9117-2022-36-254-264.

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