Original scientific paper

Transformation kinetics of selected steel grades after plastic deformation

R. Kawulok ; VŠB – Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Ostrava, Czech Republic
I. Schindler ; VŠB – Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Ostrava, Czech Republic
P. Kawulok ; VŠB – Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Ostrava, Czech Republic
S. Rusz ; VŠB – Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Ostrava, Czech Republic
P. Opěla ; VŠB – Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Ostrava, Czech Republic
J. Kliber
Z. Solowski ; Třinecké železárny a.s., Třinec, Czech Republic
K. M. Čmiel ; Třinecké železárny a.s., Třinec, Czech Republic
P. Podolínský ; Třinecké železárny a.s., Třinec, Czech Republic
M. Mališ ; ArcelorMittal Ostrava a.s., Ostrava, Czech Republic
Z. Vašek ; ArcelorMittal Ostrava a.s., Ostrava, Czech Republic
F. Vančura ; Kovárna VIVA a.s., Zlín, Czech Republic

Abstract

The aim of this article was to assess the impact of previous plastic deformation on the kinetics of transformations of four selected steels. The research was conducted with use of the universal plastometer GLEEBLE 3800, when Continuous Cooling Transformation (CCT) and Deformation Continuous Cooling Transformation (DCCT) diagrams of selected steels were constructed on the basis of dilatometric tests. The research confirmed that the strain accelerates the particularly the transformations controlled by diffusion. Bainitic transformation was accelerated in three of the four steels. In the case of martensitic transformation the effect of the previous deformation was relatively small, but with clearly discernible trend.

Keywords

steel; plastic deformation; phase transformation; dilatometric tests; CCT and DCCT diagrams

Hrčak ID:

153619

URI

https://hrcak.srce.hr/153619

Publication date:

1.7.2016.

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