Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Zbyšek Nový"'
Autor:
Matěj Rott, Ying Li, Martina Koukolíková, Martina Šípová, Pavel Salvetr, Zbyšek Nový, Gerhard Wolf, Jan Džugan
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-9 (2023)
Abstract This work deals with the fabrication of one low density steel by mixing AISI S2 tool steel and AlSi10Mg powders using powder-based directed energy deposition (P-DED) technique. Two approaches of mixing powders were compared-continuous mixing
Externí odkaz:
https://doaj.org/article/f58bfd426d2940949cd2ddb04c8959d6
Autor:
Aleksandr Gokhman, Petr Motyčka, Pavel Salvetr, Zbyšek Nový, Jakub Kotous, Arkadii Briukhanov, Ján Džugan
Publikováno v:
Materials, Vol 16, Iss 13, p 4619 (2023)
In this study, dilatometry and metallography were used to investigate the effect of silicon and copper alloying on the decomposition kinetics of 54SiCr6 steel during continuous slow cooling. It is different from the published literature for using the
Externí odkaz:
https://doaj.org/article/8e8bd994065a4a84bb0b442515c38825
Publikováno v:
Materials, Vol 16, Iss 10, p 3852 (2023)
The paper presents the possibilities of heat treatment of low-density structural steels usable for springs. Heats have been prepared with chemical compositions 0.7 wt% C and 1 wt% C, as well as 7 wt% Al and 5 wt% Al. Samples were prepared from ingots
Externí odkaz:
https://doaj.org/article/86465f8666e442db965a0b86c834948b
Autor:
Pavel Salvetr, Andrea Školáková, Jakub Kotous, Jan Drahokoupil, Daniel Melzer, Zdeněk Jansa, Črtomir Donik, Aleksandr Gokhman, Zbyšek Nový
Publikováno v:
Materials, Vol 16, Iss 5, p 2121 (2023)
The present work aimed to study the properties of medium-carbon steel during tempering treatment and to present the strength increase of medium-carbon spring steels by strain-assisted tempering (SAT). The effect of double-step tempering and double-st
Externí odkaz:
https://doaj.org/article/38734b3561d54200aef6e7e567e08ebd
Effect of Cu Alloying on Mechanical Properties of Medium-C Steel after Long-Time Tempering at 500 °C
Autor:
Pavel Salvetr, Aleksandr Gokhman, Milan Svoboda, Črtomir Donik, Ivana Podstranská, Jakub Kotous, Zbyšek Nový
Publikováno v:
Materials, Vol 16, Iss 6, p 2390 (2023)
This research studies the influence of the copper alloying of medium-carbon steel on mechanical properties after quenching and tempering at 500 °C. The microstructure was characterised using SEM, EBSD, TEM, and XRD analysis. The mechanical propertie
Externí odkaz:
https://doaj.org/article/8d58e4788c8b415dac621c126c272f17
Autor:
Zbyšek Nový, Pavel Salvetr, Jakub Kotous, Petr Motyčka, Aleksandr Gokhman, Črtomir Donik, Ján Džugan
Publikováno v:
Materials, Vol 15, Iss 20, p 7354 (2022)
Spring steels are typical materials where enhancement of mechanical properties can save considerable mass for transport vehicles, in this way the consumption of fuel or electric energy can be decreased. A drastic change in both the resulting microstr
Externí odkaz:
https://doaj.org/article/e05ba8c72452442e8565bfb8d8e82d70
Autor:
Jiří Hájek, Zbyšek Nový, Ludmila Kučerová, Hana Jirková, Pavel Salvetr, Petr Motyčka, Jan Hajšman, Tereza Bystřická
Publikováno v:
Materials, Vol 15, Iss 7, p 2539 (2022)
This paper introduces a new alloying concept for low-density steels. Based on model calculations, samples—or “heats”—with 0.7 wt% C, 1.45 wt% Si, 2 wt% Cr, 0.5 wt% Ni, and an aluminium content varying from 5 to 7 wt% are prepared. The alloys
Externí odkaz:
https://doaj.org/article/05b8d7c6d26c4bb59c9d38f21ca4e080
Publikováno v:
Materials, Vol 14, Iss 18, p 5244 (2021)
Requirements for mechanical properties of steels are constantly increasing, and the combination of quenching and tempering is the method generally chosen for achieving high strength in medium carbon steels. This study examines the influence of variou
Externí odkaz:
https://doaj.org/article/636b52fb01944a5e8dad88626e485390
Autor:
Aleksandr Gokhman, Zbyšek Nový, Pavel Salvetr, Vasyl Ryukhtin, Pavel Strunz, Petr Motyčka, Jan Zmeko, Jakub Kotous
Publikováno v:
Materials, Vol 14, Iss 6, p 1445 (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 quantitativ
Externí odkaz:
https://doaj.org/article/56baf8d24bd545cbbf300e1e11eab06e
Publikováno v:
Materials, Vol 13, Iss 1, p 143 (2019)
This work concerns mechanical properties in relation to microstructural changes in hardenable EN AW-2024 aluminium alloy in wrought and heat treated condition. The treated material benefits from synergistic effects of hardening mechanisms. Grain boun
Externí odkaz:
https://doaj.org/article/b81aba5953034f8cbbc046aedbffba89