Manufacturing Technology 2020, 20(4):516-520 | DOI: 10.21062/mft.2020.079

Influence of Si and Cu content on tempering and properties of 54SiCr6 steel

Pavel Salvetr, Zbyšek Nový, Aleksandr Gokhman, Jakub Kotous, Jan Zmeko, Petr Motyčka, Jaromír Dlouhý
COMTES FHT, Prumyslova 995, 334 41 Dobrany. Czech Republic

The 54SiCr6 steel belongs to spring steels which excel high strength and at the same time reaches high values of reduction of area and sufficient value of elongation. Nowadays, new methods are searched and examined how to get better properties from materials, higher strength and toughness, longer fatigue resistance or better corrosion properties. In the case of silicon-chromium spring steels, innovative heat treatments are investigated such as quenching and partitioning which enables to achieve higher ductility of steel due to higher content of retained austenite. The way of modification of the chemical composition of the 54SiCr6 steel was chosen in combination with conventional heat treatment composed of quenching and tempering to get better properties. The materials with in-creased content of copper to 1.5 wt. % and silicon to 2.5 wt. % were prepared. The influence of alloy-ing elements on microstructure and mechanical properties was followed up to the tempering temper-ature of 400 °C.

Keywords: High-strength steel, spring steel, 54SiCr6, copper precipitation, heat treatment
Grants and funding:

ERDF Research of advanced steels with unique properties, No. CZ02.1.01/0.0/0.0/16_019/0000836.
Czech Science Foundation, grant number 17-19002S “Synergy of precipitation, deformation and trans-formation hardening in steels with higher copper content”.

Received: July 29, 2020; Revised: August 29, 2020; Accepted: September 24, 2020; Prepublished online: November 23, 2020; Published: December 8, 2020  Show citation

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Salvetr P, Nový Z, Gokhman A, Kotous J, Zmeko J, Motyčka P, Dlouhý J. Influence of Si and Cu content on tempering and properties of 54SiCr6 steel. Manufacturing Technology. 2020;20(4):516-520. doi: 10.21062/mft.2020.079.
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