Issues »  Volume 43, Issue 2

Low-Temperatures Physical-Mechanical Properties of the Medium-Entropy Alloy Co$_{17.5}$Cr$_{12.5}$Fe$_{55}$Ni$_{10}$Mo$_5$

Yu. O. Semerenko$^{1}$, E. D. Tabachnikova$^{1}$, T. V. Hryhorova$^{1}$, S. E. Shumilin$^{1}$, Yu. O. Shapovalov$^{1}$, H. S. Kim$^{2}$, J. Moon$^{2}$, H. Kwon$^{2}$

$^{1}$B.I. Verkin Institute for Low Temperature Physics and Engineering, NAS of Ukraine, 47 Nauky Ave., UA-61103 Kharkiv, Ukraine
$^{2}$Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-gu, KR-37673 Pohang, Gyeongbuk, Republic of Korea

Received: 31.01.2020; final version - 30.12.2020. Download: PDF

Mechanical and acoustical properties of the new medium-entropy alloy Co$_{17,5}$Cr$_{12,5}$Fe$_{55}$Ni$_{10}$Mo$_5$ are studied for the first time in the low-temperature range. As shown, this alloy has a stable microstructure and rather high strength and plasticity. The high cryogenic strength of the investigated alloy, which is accompanied by a sufficiently high plasticity, allows considering this material as promising for cryogenic applications. The results obtained are important for the practical applications of high-entropy alloys at low temperatures.

Key words: medium-entropy alloy, strength, plasticity, acoustical absorption, dynamical elasticity modulus.

URL: http://mfint.imp.kiev.ua/en/abstract/v43/i02/0273.html

DOI: https://doi.org/10.15407/mfint.43.02.0273

PACS: 61.43.Gt, 62.20.D-, 62.20.F-, 62.25.-g, 62.40.+i

Citation: Yu. O. Semerenko, E. D. Tabachnikova, T. V. Hryhorova, S. E. Shumilin, Yu. O. Shapovalov, H. S. Kim, J. Moon, and H. Kwon, Low-Temperatures Physical-Mechanical Properties of the Medium-Entropy Alloy Co$_{17.5}$Cr$_{12.5}$Fe$_{55}$Ni$_{10}$Mo$_5$, Metallofiz. Noveishie Tekhnol., 43, No. 2: 273—287 (2021) (in Ukrainian)

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