Effect of Hot Rolling and Strip Tension on Mechanical Properties of Cold-Rolled Two-Phase Ferritic-Martensitic Steels


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Abstract

Results are given for a study of the effect of hot rolling parameters on the mechanical properties of heat-treated cold-rolled product of two-phase ferritic-martensitic steel (TFMS) of grade HCT980X (EN10336:2007). Temperatures for the end of rolling and coiling are varied during hot rolling of a metal laboratory melt. Hot-rolled product obtained by different versions is heat treated by regimes modeling annealing in a continuous hot galvanizing unit (CHGU). Morphological features of structural components and excess phase precipitates in different treatment stages are studied. The effect of strip tension in a CGHU on a set of mechanical properties with a change in temperature is analyzed. Mechanical test results are used to determine the optimum heat treatment temperature range providing the required level of cold-rolled steel strength properties.

About the authors

A. V. Nishchik

Bardin Central Research Institute of Ferrous Metallurgy (TsNIIchermet)

Author for correspondence.
Email: nischik-alexandr@yandex.ru
Russian Federation, Moscow

I. G. Rodionova

Bardin Central Research Institute of Ferrous Metallurgy (TsNIIchermet)

Email: nischik-alexandr@yandex.ru
Russian Federation, Moscow

O. N. Baklanova

Bardin Central Research Institute of Ferrous Metallurgy (TsNIIchermet)

Email: nischik-alexandr@yandex.ru
Russian Federation, Moscow

A. V. Grishin

Bardin Central Research Institute of Ferrous Metallurgy (TsNIIchermet)

Email: nischik-alexandr@yandex.ru
Russian Federation, Moscow

R. R. Adigamov

Severstal Cherepovets Metallurgical Combine

Email: nischik-alexandr@yandex.ru
Russian Federation, Cherepovets

D. I. Nikitin

Severstal Cherepovets Metallurgical Combine

Email: nischik-alexandr@yandex.ru
Russian Federation, Cherepovets

E. N. Kroitor

Severstal Cherepovets Metallurgical Combine

Email: nischik-alexandr@yandex.ru
Russian Federation, Cherepovets

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