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DETERMINATION OF THE CRITICAL STRAIN FOR THE ONSET OF DYNAMIC RECRYSTALLIZATION OF C45 CARBON STEEL USING FLOW STRESS MODELS

1 OPĚLA Petr
Co-authors:
1 SCHINDLER Ivo 1 RUSZ Stanislav 2 VANČURA Filip
Institutions:
1 VSB - Technical University of Ostrava, Ostrava, Czech Republic, EU
2 petr.opela@vsb.cz, ivo.schindler@vsb.cz
2 Kovárna VIVA a.s., Zlín, Czech Republic, EU, filip.vancura@viva.cz
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
496-501
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
598 views / 574 downloads
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Abstract

The critical strain for initiation of dynamic recrystallization is an important value in case of thermomechanical process design. In this research, different models have been utilized to describe hot compression flow curves of C45 carbon steel up to the peak point. Further, equations derived from these models were used to calculate the critical strain in wide range of thermomechanical conditions. Thus calculated values of the critical strain are function of the peak strain and of other deformation parameters. The calculations showed comparable results of almost each derived equation.

Keywords: hot deformation, flow curve modeling, onset of dynamic recrystallization

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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