Abstract
The PrDyFeCoB microwires, whose diameter and cylindricity are controlled via rotation speed of a cooling cylinder and depend on time of droplet solidification on it, are obtained via extraction of a hanging melt droplet. The variations in cooling mode of a melt droplet lead to a change in cross-sectional shape from completely cylindrical to semicircle, crescent, and almost flat plate one. We found that the cooling mode affects not only the morphology, but also the mechanical properties, which are different for microwires of d-ifferent shapes, and changes the microhardness and Young’s modulus of different surfaces of the same microwire.
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ACKNOWLEDGMENTS
The authors are grateful to N. N. Dremova for obtaining SEM images.
Funding
This work was financially supported by the Russian Foundation for Basic Research (grant “Stability,” no. 20-32-70025), the grant of the President of Russian Federation for the state support of leading scientific schools (no. 2644.2020.2), and the program of the Institute of Problems of Chemical Physics, Russian Academy of Sciences (no. AAAA-A19-119092390079-8).
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Translated by A. Tulyabaev
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Koplak, O.V., Dvoretskaya, E.V., Kravchuk, K.S. et al. The Morphology and Mechanical Properties of PrDyFeCoB Microwires. Phys. Solid State 62, 2272–2279 (2020). https://doi.org/10.1134/S1063783420120161
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DOI: https://doi.org/10.1134/S1063783420120161