Temperature Dependence of the Acoustic and Mechanical Properties of Cast and Annealed High-Entropy Al0.5CoCuCrNiFe Alloy
Yu. O. Semerenko1, O. D. Tabachnikova1, T. M. Tikhonovska2, I. V. Kolodiy2, O. S. Tortika2, S. E. Shumilin1, M. O. Laktionova1
1B.I. Verkin Institute for Low Temperature Physics and Engineering, NAS of Ukraine, 47 Nauky Ave., 61103 Kharkiv, Ukraine
2National Science Center Kharkov Institute of Physics and Technology, NAS of Ukraine, 1 Akademicheskaya Str., 61108 Kharkov, Ukraine
Received: 26.08.2015. Download: PDF
For the first time, the acoustic and mechanical properties of the high-entropy Al0.5CoCuCrNiFe alloy in the cast and annealed states are studied in the temperature range of 0.5—300 K. The structure of the cast and annealed high-entropy Al0.5CoCuCrNiFe alloy is studied by means of optical microscopy, X-ray diffraction, scanning electron microscopy, and X-ray microanalysis. As found in the as-cast alloy, dendritic structure is formed. Annealing leads to a change in the structure and chemical composition of structural areas that causes a significant change in the acoustic and mechanical properties in the studied temperature range.
Key words: high-entropy Al0.5CoCuCrNiFe alloy, strength, plasticity, acoustic absorption, dynamic modulus of elasticity.
URL: http://mfint.imp.kiev.ua/en/abstract/v37/i11/1527.html
DOI: https://doi.org/10.15407/mfint.37.11.1527
PACS: 43.35.Zc, 61.72.Ff, 61.72.S-, 62.40.+i, 64.70.kd, 68.70.+w, 81.40.Ef
Citation: Yu. O. Semerenko, O. D. Tabachnikova, T. M. Tikhonovska, I. V. Kolodiy, O. S. Tortika, S. E. Shumilin, and M. O. Laktionova, Temperature Dependence of the Acoustic and Mechanical Properties of Cast and Annealed High-Entropy Al0.5CoCuCrNiFe Alloy, Metallofiz. Noveishie Tekhnol., 37, No. 11: 1527—1538 (2015) (in Russian)