Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Karel Trojan"'
Autor:
Jáchym Lis, Jakub Skočdopole, Petr Jaroš, Jiří Čapek, Karel Trojan, Martin Dráb, Monika Kučeráková, Stanislav Vratislav, Ladislav Kalvoda
Publikováno v:
Crystals, Vol 14, Iss 3, p 263 (2024)
Investigation of high-entropy alloys in form of bulk samples as well as thin films is currently one of the fastest growing areas in the study of metal alloys. In this paper, a bulk sample of FeNiCoCuCr high-entropy alloy ingot with equimolar composit
Externí odkaz:
https://doaj.org/article/2d5be0f9074d43d0992538271b5b4566
Publikováno v:
Metals, Vol 14, Iss 3, p 290 (2024)
Railway wheels are usually attached to axles by press-fitting; therefore, the mechanical processes taking place during operation can result in failure, with fatal consequences for the axle seats. This manuscript describes the effect of laser hardenin
Externí odkaz:
https://doaj.org/article/b3a7bd4fafc6418a8326de799528f260
Publikováno v:
Applied Sciences, Vol 14, Iss 4, p 1511 (2024)
This study deals with two different aspects of the high-strength low-alloyed 1100 MC steel. The first is associated with the remarkable heterogeneity (linked with surface decarburization) in the surface state produced during sheet rolling with respec
Externí odkaz:
https://doaj.org/article/b850fd3db8fc45cb99a1701e9f399d8b
Publikováno v:
Crystals, Vol 13, Iss 4, p 580 (2023)
The ionized jet deposition (IJD) method is applied to the preparation of thin films composed of refractory HfNbTiTaZr high-entropy alloy (HEA). Due to its stoichiometric reliability, the IJD method provides a flexible tool for deposition of complex m
Externí odkaz:
https://doaj.org/article/59d3d6e7a616479d80f8e078e67b8ed3
Autor:
Jiří Čapek, Jan Kec, Karel Trojan, Ivo Černý, Nikolaj Ganev, Kamil Kolařík, Stanislav Němeček
Publikováno v:
Metals, Vol 12, Iss 9, p 1517 (2022)
Most power plants use the Rankine cycle, where the heat supplied to water and steam is converted into mechanical work; therefore, most components have to be made of heat-resistant steel. Sufficient mechanical properties must be ensured for welded pip
Externí odkaz:
https://doaj.org/article/b8387e0abba14b86a91a98e8baec1d1f
Autor:
Karel Trojan, Václav Ocelík, Jiří Čapek, Jaroslav Čech, David Canelo-Yubero, Nikolaj Ganev, Kamil Kolařík, Jeff T. M. De Hosson
Publikováno v:
Metals, Vol 12, Iss 2, p 243 (2022)
Hot working tool steel (AISI H13) is one of the most common die materials used in casting industries. A die suffers from damage due to friction and wear during its lifetime. Therefore, various methods have been developed for its repair to save costs
Externí odkaz:
https://doaj.org/article/f4fec5a8266e4afa82acfa58fded8102
Autor:
Karel Trojan, Václav Ocelík, Nikolaj Ganev, Stanislav Němeček, Jaroslav Čech, Jiří Čapek, Jakub Němeček
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 17, Iss 0, Pp 15-19 (2018)
The aim of this paper is to describe the effects of annealing on the microstructure of laser cladded AISI H13 tool steel using various methods. Advanced laser technology has the potential to replace conventional methods to make and repair dies. Howev
Externí odkaz:
https://doaj.org/article/e4a2480de2704273a5e577e12abaff77
Publikováno v:
Materials, Vol 14, Iss 16, p 4598 (2021)
The authors would like to correct the sentence in the “Materials and Methods” section of their article [...]
Externí odkaz:
https://doaj.org/article/75ddebb037c34d66b8111281573355fa
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 9, Iss 0, Pp 32-38 (2017)
The paper outlines the capability of X-ray diffraction (XRD) for evaluation of real structure changes and residual stresses (RS) on cross-section of advanced thick welds due to the welding of ferromagnetic plates. The results of neutron diffraction d
Externí odkaz:
https://doaj.org/article/b7ad3c4c7ff14b789a63af643b7cc2e5
Publikováno v:
Materials, Vol 14, Iss 1, p 131 (2020)
Pipeline transport uses millions of kilometers of pipes worldwide to transport liquid or gas over long distances to the point of consumption. High demands are placed, especially on the transport of hazardous substances under high pressure (gas, oil,
Externí odkaz:
https://doaj.org/article/ef77b6518a304319a28ea5e3d3e5a8ce