DOI: 10.22184/1993-7296.FRos.2020.

A review of the research of foreign studies on the characterization of high-entropy alloys (HEA) is given in this article. It has been shown that HEA based on a body-centered lattice (BCL) of a solid solution are more heat-resistant than a highly entropic alloy based on a face-centered lattice (FCL) of a solid solution. The results of the obtained quasi-high-entropy alloys (QHEA) with new properties instead of expensive highentropy alloys by introducing several serial powder materials based on iron, nickel, cobalt and tantalum nanocarbide additives to increase the wear resistance of coatings obtained by laser welding are presented. The introduction of 6% tantalum nanocarbide into the QHEA charge increases the wear resistance by 2.8 times compared to surfacing without carbide and increases the wear resistance by 7.2 times compared with the characteristic of the base material made of 40X steel. The technology of laser cladding QHEA can be used to restore various parts of machines, including those operating at elevated loads and temperatures. The characteristics of coatings obtained in the process of laser cladding are given. The range of variation of the operating parameters of the laser radiation is indicated: power of the displacement velocity, beam diameter.


Разработка: студия Green Art