Manufacturing Technology 2023, 23(4):525-531 | DOI: 10.21062/mft.2023.061

Possibilities for Improvement of Mechanical Properties of High-Strength Medium-Carbon SiCr Steels

Pavel Salvetr ORCID...1, Jakub Kotous ORCID...1, Črtomir Donik ORCID...2, Aleksandr Gokhman ORCID...1, Zbyšek Nový ORCID...1
1 COMTES FHT a.s., Průmyslová 995, 334 41 Dobřany. Czech Republic
2 Institute of Metals and Technology (IMT), Lepi pot 11, 1000 Ljubljana. Slovenia

The 54SiCr6 high-strength low-alloyed steel with medium carbon content is studied in this work. Its excellent mechanical properties allow a wide range of applications as springs and vibration dampers. The high strength is usually achieved during heat treatment consisting of quenching and tempering. This manuscript represents several methods to further increase in mechanical properties. Firstly, the influence of microstructure before quenching and tempering was studied and enhanced plastic prop-erties were measured. Secondly, a thermomechanical treatment before quenching increased the strength. Finally, the use of strain assisted tempering caused a further strengthening effect compared to conventional tempering. All these methods improve mechanical properties, some increase strength and others ductility.

Keywords: Spring steel, 54SiCr6 steel, Microstructure, Mechanical properties
Grants and funding:

The paper was supported by ERDF Research of advanced steels with unique properties (No. CZ02.1.01/0.0/0.0/16_019/0000836)

Received: May 14, 2023; Revised: July 28, 2023; Accepted: August 14, 2023; Prepublished online: August 15, 2023; Published: September 5, 2023  Show citation

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Salvetr P, Kotous J, Donik Č, Gokhman A, Nový Z. Possibilities for Improvement of Mechanical Properties of High-Strength Medium-Carbon SiCr Steels. Manufacturing Technology. 2023;23(4):525-531. doi: 10.21062/mft.2023.061.
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