DEVELOPMENT VECTOR FOR ENHANCEMENT OF CANTOR HEA PROPERTIES

First created over 20 years, high-entropy five-component alloy CoCrFeNiMn (Cantor alloy) still attracts the attention of researchers in the field of physical materials science because its possible application in various industries due to a successful combination of strength and plastic properties. To date, a large amount of experimental material has been accumulated on how to control the properties of this alloy. This article reviews the publications of Russian and foreign authors in two areas of improving the properties of this alloy: alloying, precipitation and heat treatment and the use of Calphad phase diagrams. In the first direction, the role of alloying with B, Vi, Al, V, Si, Nb is analyzed; nanoprecipitations, various modes of thermal and deformation processing. It is concluded that it is necessary to conduct experiments alloying HEA with Zr and Nb, which have proven themselves well in steels hardening. The creation and modification of the properties of five-component HEA is possible using the Calphad computer software developed for calculating state diagrams. The results of publications on the thermodynamic description of five-component alloys analyzed in the article are confirmed by comparing the phase diagrams with the available experimental data. It is shown that the development of a new generation of HEAs is possible based on the calculation of the Calphad phase diagrams.

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