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Article

Effects of Silicon, Chromium, and Copper on Kinetic Parameters of Precipitation during Tempering of Medium Carbon Steels

1
COMTES FHT a.s., Prumyslova 995, 334 41 Dobrany, Czech Republic
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Nuclear Physics Institute, Czech Academy of Sciences, 250 68 Řež, Czech Republic
*
Author to whom correspondence should be addressed.
Academic Editor: Andrey Belyakov
Materials 2021, 14(6), 1445; https://doi.org/10.3390/ma14061445
Received: 23 February 2021 / Revised: 11 March 2021 / Accepted: 11 March 2021 / Published: 16 March 2021
Understanding the tempering behavior of medium carbon steels is mandatory if their mechanical properties are to be improved. For an optimal technology to be developed for this purpose, a substantial experimental basis is needed to extract quantitative information on the microstructure of the tempered material. This paper reports on the characterization of microstructural changes induced by tempering in medium-carbon steels alloyed with Si, Cr, Cu, and Mn using state-of-the-art experimental techniques. Complementarities among these techniques are highlighted. The evolution of transition carbides, cementite, and copper precipitates is described using data from X-ray diffraction, small and ultra-small angle neutron diffraction, transmission electron microscopy, and dilatometry observation. The effects of silicon, chromium, and copper on the mechanism of carbide and copper precipitation are discussed. The considerable changes found in the size and volume of copper precipitates correlate well with the difference in the yield stress between tempered steels with and without copper. View Full-Text
Keywords: medium carbon steels; microstructure; tempering; XRD; TEM; USANS; SANS; dilatometry; carbides; copper precipitates medium carbon steels; microstructure; tempering; XRD; TEM; USANS; SANS; dilatometry; carbides; copper precipitates
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MDPI and ACS Style

Gokhman, A.; Nový, Z.; Salvetr, P.; Ryukhtin, V.; Strunz, P.; Motyčka, P.; Zmeko, J.; Kotous, J. Effects of Silicon, Chromium, and Copper on Kinetic Parameters of Precipitation during Tempering of Medium Carbon Steels. Materials 2021, 14, 1445. https://doi.org/10.3390/ma14061445

AMA Style

Gokhman A, Nový Z, Salvetr P, Ryukhtin V, Strunz P, Motyčka P, Zmeko J, Kotous J. Effects of Silicon, Chromium, and Copper on Kinetic Parameters of Precipitation during Tempering of Medium Carbon Steels. Materials. 2021; 14(6):1445. https://doi.org/10.3390/ma14061445

Chicago/Turabian Style

Gokhman, Aleksandr, Zbyšek Nový, Pavel Salvetr, Vasyl Ryukhtin, Pavel Strunz, Petr Motyčka, Jan Zmeko, and Jakub Kotous. 2021. "Effects of Silicon, Chromium, and Copper on Kinetic Parameters of Precipitation during Tempering of Medium Carbon Steels" Materials 14, no. 6: 1445. https://doi.org/10.3390/ma14061445

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