INFLUENCE OF SEVERE PLASTIC DEFORMATION PROCESS ON MECHANICAL PROPERTIES OF LOW CARBON STEEL

1 RUSZ Stanislav
Co-authors:
1 HILŠER Ondřej 1 SZKANDERA Pavel 2 ZABYSTRZAN Rostislav 1 Švec Jiří 1 MAREŠ Vratislav 3 KLOS Marcel
Institutions:
1 VSB - Technical University of Ostrava, Ostrava, Czech Republic, EU, stanislav.rusz@vsb.cz
2 SteelTec CZ, s. r. o., Třinec, Czech Republic, EU, rostislav.zabystrzan@steeltec.cz
3 Tatra Trucks, a.s., Kopřivnice, Czech Republic, EU, marcel.klos@tatra.cz
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
473-476
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
50 views / 23 downloads
Abstract

Method DRECE (Dual Rolls Equal Channel Extrusion) belongs to a perspective group of technologies utilizing the process of severe plastic deformations (SPD). Used for forming of metallic materials. On the newly developed forming device, unlike the rolling technology, the material is significantly strengthening after the forming process, while maintaining the initial strip sheet dimensions. We want to achieve a significant increase in mechanical properties in as few passages as possible by the forming device, in particular increasing the yield strength Re and the ultimate tensile strength Rm, while maintaining good formability. The above-described forming method was used to extrude of low carbon steel. Overall, the effect of the individual passages on the increasing of mechanical properties of low carbon steel as tested in a total number of 1 to 7 passes through forming device. The forming tool, according to the pre-performed experiments, was chosen with an inclination of 108° in the deformation zone. The mechanical properties obtained after each pass through the forming device from the tensile tests and the influence of the anisotropy of steel on the mechanical properties were analyzed and the microstructure of the strip sheet was evaluated.

Keywords: Severe plastic deformation process, DRECE method, forming device, anisotropy of strip sheet, mechanical properties, microstructure
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