PLASTICITY OF STEEL TYPES MEANT FOR ROLLING WIRE ROD

1 HADASIK Eugeniusz
Co-authors:
1 PŁACHTA Adam 1 KUC Dariusz 1 TKOCZ Marek 1 NIEWIELSKI Grzegorz
Institution:
1 Silesian University of Technology, Krasińskiego 8 Street, Katowice, Poland, EU, eugeniusz.hadasik@polsl.pl
Conference:
25th Anniversary International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 25th - 27th 2016
Proceedings:
Proceedings 25th Anniversary International Conference on Metallurgy and Materials
Pages:
364-370
ISBN:
978-80-87294-67-3
ISSN:
2694-9296
Published:
14th December 2016
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
135 views / 60 downloads
Abstract

The paper presents plasticity tests results for steel types 23MnB4, 30MnB4, C45 and C70 meant for rolling wire rods in modern continuous rolling mill. The assessment of plasticity was conducted in hot torsion test with the use of torsion plastometer in temperature range of wire rod rolling from 850 to 1150°C and strain rates of 0.1; 1 and 10 s-1. The core data for plasticity assessment were the achieved redundancies of yield stress from deformation on the basis of registered torsional moment in function of number of torsions of a sample. On such basis the values which characterize the susceptibility of steel to plastic shaping were determined such as: peak stress, value of deformation corresponding with the maximum stress and deformation till failure. Those values were dependent on temperature and strain rate. The dependency between maximum yield stress with corresponding deformation and the energy of activation with Zener-Hollomon parameter was elaborated together with marking the yield stress function.

Keywords: Hot torsion test, peak stress, strain, plasticity of steel

© 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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