Hynek Hadraba

Czech Academy of Sciences, Institute of Physics of Materials

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Zdeněk Chlup

Czech Academy of Sciences, Institute of Physics of Materials

Daniel Drdlík

Brno University of Technology

Ivo Dlouhý

Czech Academy of Sciences, Institute of Physics of Materials

Luděk Stratil

Czech Academy of Sciences, Institute of Physics of Materials

Karel Maca

Brno University of Technology

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Filip Šiška

Czech Academy of Sciences, Institute of Physics of Materials

Jaroslav Cihlář

Central European Institute of Technology

Jiří Matějíček

Czech Academy of Sciences, Institute of Plasma Physics

Ivo Kuběna

Czech Academy of Sciences, Institute of Physics of Materials

Monika Vilémová

Czech Academy of Sciences, Institute of Plasma Physics

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Brno University of Technology

Czech Academy of Sciences

Central European Institute of Technology

Czech Academy of Sciences, Institute of Physics of Materials

Slovak Academy of Sciences

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Charles University

Czech Technical University in Prague

Czech Academy of Sciences, Institute of Physics

Czech Academy of Sciences, Institute of Plasma Physics

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FeSiBAlNiMo High Entropy Alloy Prepared by Mechanical Alloying

Acta Physica Polonica A (2017)

Radovan Búreš Hynek Hadraba Mária Fáberová P. Kollář J. Füzer

High-entropy alloys have attracted increasing attentions because of their unique compositions, microstructures, and adjustable mechanical and functional properties.In this work, mechanical and magnetic properties of the FeSiBAlNiMo high-entropy alloy were studied in heat-treated conditions.Influence of temperature and time of sintering was investigated.The lowest coercivity Hc = 370 A/m was reached at sintering temperature 580 • C, during 20 min in Ar/10H2 atmosphere.Resistivity decreases from R = 0.006 Ωcm at 580 • C of sintering temperature to R = 0.0004 Ωcm at temperature 1100 • C. Transverse rupture strength TRS = 340 MPa as well as the Young modulus E = 87 GPa were much higher in the case of sintering at 1100 • C in comparison to TRS = 5 MPa and E = 7.5 GPa at sintering temperature 580 • C. Low temperature consolidation made possible to structure recovery and stress relief of amorphous-nanocrystalline structure.Higher temperature above 1100 • C induced sintering processes and formation of complex borides.

High-Entropy Alloys

10.12693/aphyspola.131.771

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Citations (6)

Phase, Composition and Structure Changes of CoCrNi-Based Concentrated Alloys Resulting from High Temperature Oxidation

Materials (2020)

Monika Vilémová Hynek Hadraba Zdeněk Weiss František Lukáč Štefan Csáki

In this work, CoCrNi, FeCoCrNi and CoCrFeMnNi concentrated alloys with a Y-Ti oxide particle dispersion were prepared by mechanical alloying and Spark Plasma Sintering. The alloy consists of an FCC Ni-based matrix with a Y-Ti oxide dispersion and additional phases of Cr

Spark Plasma Sintering

High-Temperature Corrosion

10.3390/ma13102276

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Citations (8)

Effects of grains‘ morphology on strengthening mechanisms in ODM401 14Cr ODS steel at high temperatures

Materials Science and Engineering A (2022)

Filip Šiška Hynek Hadraba Luděk Stratil Stanislava Fintová Ivo Kuběna

Grain boundary strengthening

Climb

Stress relaxation

10.1016/j.msea.2022.143663

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Citations (1)

Electrophoretic deposition of alumina and zirconiaII. Two-component systems

Ceramics International (2004)

Hynek Hadraba Karel Maca Jaroslav Cihlář

Electrophoretic Deposition

Deposition

Particle (ecology)

10.1016/s0272-8842(03)00208-6

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Citations (46)

Sintering of gadolinia-doped ceria prepared by mechanochemical synthesis

Journal of the European Ceramic Society (2007)

Karel Maca Jaroslav Cihlář Klára Částková Oldřich Zmeškal Hynek Hadraba

Distilled water

Agglomerate

10.1016/j.jeurceramsoc.2007.02.157

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Citations (26)

Conversion of transgranular to intergranular fracture in NiCr steels

Engineering Fracture Mechanics (2007)

Hynek Hadraba Ondřej Němec Ivo Dlouhý

Charpy impact test

Embrittlement

Transgranular fracture

Brittleness

Necking

10.1016/j.engfracmech.2007.08.006

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Citations (15)

Liquid Lead Resistance and Cracking of Novel 1al-Sc-Y Ods Eurofer Steel

Martina Pazderová Anna Hojná Hynek Hadraba Luděk Stratil Filip Šiška

Download This Paper Open PDF in Browser Add Paper to My Library Share: Permalink Using these links will ensure access to this page indefinitely Copy URL Copy DOI

Lead (geology)

10.2139/ssrn.4727539

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Citations (0)

Luminescent Eu3+-doped transparent alumina ceramics with high hardness

Journal of the European Ceramic Society (2017)

Katarína Drdlíková Róbert Klement Hynek Hadraba Daniel Drdlík Dušan Galusek

Transparent ceramics

Vickers hardness test

10.1016/j.jeurceramsoc.2017.05.007

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Citations (23)