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Akademický článek

In-situ directed energy deposition of Al based low density steel for automotive applications

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

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Akademický článek

THERMO-MECHANICAL FATIGUE ANALYSIS OF A STEAM TURBINE SHAFT

Autor: Martin Nesládek, Josef Jurenka, Michal Bartošák, Milan Růžička, Maxim Lutovinov, Jan Papuga, Radek Procházka, Jan Džugan, Petr Měšťánek

Publikováno v: Acta Polytechnica CTU Proceedings, Vol 20, Iss 0, Pp 56-64 (2018)

Increasing demands on the flexibility of steam turbines due to the use of renewable energy sources substantially alters the fatigue strength requirements of components of these devices. Rapid start-ups as well as the increased number of the load cycl

Externí odkaz: https://doaj.org/article/180b86b6454644bcabefae0660078521

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Akademický článek

Optimization of the Mechanical Performance of Titanium for Biomedical Applications by Advanced, High-Gain SPD Technology

Autor: Kateřina Mertová, Jan Palán, Gergely Németh, Stanislava Fintová, Michal Duchek, Tomáš Studecký, Josef Veselý, Kristián Máthis, Jan Džugan, Zuzanka Trojanová

Publikováno v: Crystals, Vol 10, Iss 6, p 422 (2020)

This recent study deals with the optimization of the mechanical performance of Grade 2 and Grade 4 titanium with Conform severe plastic deformation (SPD) processing and subsequent rotary swaging. A comprehensive study of the materials behaviour and c

Externí odkaz: https://doaj.org/article/f895b4a775e24bdf8efc61c53eefa64b

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Akademický článek

STRUCTURE AND PROPERTIES OF AZ31 MAGNESIUM ALLOY AFTER COMBINATION OF HOT EXTRUSION AND ECAP

Autor: Ondřej Hilšer, Stanislav Rusz, Wojciech Maziarz, Jan Dutkiewicz, Tomasz Tański, Przemysław Snopiński, Jan Džugan

Publikováno v: Acta Metallurgica Slovaca, Vol 23, Iss 3 (2017)

Equal channel angular pressing (ECAP) method was used for achieving very fine-grained structure and increased mechanical properties of AZ31 magnesium alloy. The experiments were focused on the, in the initial state, hot extruded alloy. ECAP process w

Externí odkaz: https://doaj.org/article/92c03bc91be546e49a130f15769b4ba2

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Akademický článek

Determination of Directional Residual Stresses by the Contour Method

Autor: Josef Hodek, Antonín Prantl, Jan Džugan, Pavel Strunz

Publikováno v: Metals, Vol 9, Iss 10, p 1104 (2019)

This study evaluated residual stresses in heat-treated specimens made of 316L stainless steel using FE analysis and compared them with stresses determined by the contour method. Contour method is usually used just for evaluation of residual stresses

Externí odkaz: https://doaj.org/article/caa7e8c0cbd14fad94a1661db1f9562b

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Akademický článek

Study of the Microstructure, Tensile Properties and Hardness of AZ61 Magnesium Alloy Subjected to Severe Plastic Deformation

Autor: Ondřej Hilšer, Stanislav Rusz, Pavel Szkandera, Lubomír Čížek, Martin Kraus, Jan Džugan, Wojciech Maziarz

Publikováno v: Metals, Vol 8, Iss 10, p 776 (2018)

Hot extruded (EX) AZ61 magnesium alloy was processed by the twist channel angular pressing (TCAP) method, which combines equal channel angular pressing (ECAP) and twist extrusion (TE) processes and significantly improves the efficiency of the grain r

Externí odkaz: https://doaj.org/article/e83506cafffb4f97a272e0394989cc10

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