| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Cieślak, Grzegorz
Institute of Precision Mechanics
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Enhanced mechanical properties and microstructural stability of ultrafine-grained biodegradable Zn-Li-Mn-Mg-Cu alloys produced by rapid solifictaion and high-pressure torsioncitations
- 2024Enhanced mechanical properties and microstructural stability of ultrafine-grained biodegradable Zn–Li–Mn–Mg–Cu alloys produced by rapid solidification and high-pressure torsioncitations
- 2023Properties of Ni-B/B Composite Coatings Produced by Chemical Reductioncitations
- 2021Evaluation of Harmonic Structure Obtained in Mechanically Milled Powders and Pulse Plasma Sintered Compacts of Austenitic Steelcitations
- 2020Influence of heat treatment on properties of Ni-B/B composite coatingscitations
- 2019The influence of volume fraction of amorphous phase on corrosion resistance of Mg67Zn29Ca4alloycitations
- 2019Structure and mechanical properties of nanocrystalline Ni/Cu multilayer coatings produced by the electrocrystallization methodcitations
- 2019The impact of different volume fractions of crystalline structures on the electrochemical behaviour of Mg67Zn29Ca4alloys for biomedical applicationscitations
- 2019Demystifying the sluggish diffusion effect in high entropy alloyscitations
- 2019Glass forming ability of Zr48Cu36Al16-xAgx alloys determined by three different methodscitations
- 2018Preparation and properties of nanocrystalline Ni/graphene composite coatings deposited by electrochemical methodcitations
- 2018Studies of “sluggish diffusion” effect in Co-Cr-Fe-Mn-Ni, Co-Cr-Fe-Ni and Co-Fe-Mn-Ni high entropy alloys; determination of tracer diffusivities by combinatorial approachcitations
- 2018Effect of structure on corrosion resistance of Mg-Zn-Ca alloy
- 2017Influence of Cu content on high temperature oxidation behavior of AlCoCrCuxFeNi high entropy alloys (x = 0; 0.5; 1)citations
- 2017Abrasion resistance of Ni-B/Si3N4 composite layers produced by electroless methodcitations
- 2016Preparation and mechanical properties of alumina composites reinforced with nickel-coated graphenecitations
Places of action
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article
Demystifying the sluggish diffusion effect in high entropy alloys
Abstract
Interdiffusion studies in Co-Cr-Fe-Mn-Ni, Co-Fe-Mn-Ni, Co-Cr-Fe-Ni, and Co-Cr-Mn-Ni, as well as a reevaluation of the previous results obtained for Al-Co-Cr-Fe-Ni, were conducted. In the experimental part, diffusion couples were annealed at four different temperatures: 1230, 1270, 1310 and 1350 K for each system. Then, the results were evaluated with use of the optimization-based technique, combined with the Miedema's thermodynamic description, what allowed obtaining of tracer diffusion coefficients for all elements in all considered systems. The correctness of the applied approach was tested on the example of Co-Cr-Fe-Mn-Ni system, showing very good agreement of determined tracer diffusivities with the values obtained by other authors. Obtained values of diffusivities were compared with the available data for a number of conventional binary and ternary systems. No signs of diffusion retardation were observed in the absolute temperature scale. In the case of temperature scale normalized with respect to the melting point, an abnormal behavior, previously attributed to the HEAs' sluggish diffusion effect was observed. However, it occurred only for alloys with prominent manganese content and was completely independent of the number of components, being just as likely to occur in binary systems as in HEAs. Therefore, the alleged sluggishness of diffusion in HEAs should be treated just as a result of specific compositions of the previously studied alloys and cannot be generalized for all high entropy systems.