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Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12128/16888
Title: Microstructure and mechanical properties of Co-Cr-Mo-Si-Y-Zr high entropy alloy
Authors: Glowka, Karsten
Zubko, Maciej
Świec, Paweł
Prusik, Krystian
Albrecht, Robert
Dercz, Grzegorz
Loskot, Jan
Witala, Bartosz
Stróż, Danuta
Keywords: multi-component alloys; high entropy alloys; microstructure analysis; mechanical properties
Issue Date: 2020
Citation: "Metals" Vol. 10, iss. 11 (2020), art. no. 1456
Abstract: Presented work was focused on obtaining new, up to our knowledge, non-described previously in the literature high entropy Co15Cr15Mo25Si15Y15Zr15 alloy to fill in the knowledge gap about the six-elemental alloys located in the adjacent to the center of phase diagrams. Material was obtained using vacuum arc melting. Phase analysis revealed the presence of a multi-phase structure. Scanning electron microscopy microstructure analysis revealed the existence of three di erent phases with partially dendritic structures. Chemical analysis showed that all phases consist of all six principal elements—however, with di erent proportions. Transmission electron microscopy microstructure analysis confirmed the presence of amorphous and nanocrystalline areas, as well as their mixture. For the studied alloy, any phase transformation and solid-state crystallization were not revealed in the temperature range from room temperature up to 1350 C. Nanoindentation measurements revealed high nanohardness (13(2) GPa and 18(1) GPa for dendritic and interdendritic regions, respectively) and relatively low Young’s modulus (185(23) GPa and 194(9) GPa for dendritic and interdendritic regions, respectively) of the observed phases.
URI: http://hdl.handle.net/20.500.12128/16888
DOI: 10.3390/met10111456
ISSN: 2075-4701
Appears in Collections:Artykuły (WNŚiT)

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