Open AccessЭволюция структуры AlCoCrFeNi высокоэнтропийного сплава при облучении импульсным электронным пучком
Author(s) -
Yu. F. Ivanov,
В.Е. Громов,
С.В. Коновалов,
Yu. A. Shlyarova
Publication year - 2021
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2021.12.51762.205-21
Subject(s) - alloy , materials science , crystallization , irradiation , cathode ray , high entropy alloys , phase (matter) , electron beam processing , electron , thermodynamics , composite material , chemistry , physics , organic chemistry , quantum mechanics , nuclear physics
By the methods of modern physical materials science the change in structural-phase state of AlCoCrFeNi high-entropy alloy (HEA) of nonequiatomic composition obtained by the methods of wire arc additive technology (WAAM) after irradiation by electron beams with energy density of (10-30) J/cm2, durality of 50 μs, frequency 0.3 Hz is studied. In the initial state the alloy had a dendritic structure indicating the inhomogeneous distribution of elements. It is shown that electron beam processing forms the structure of high-velocity cellular crystallization with cell size of 100-200 nm, along boundaries of which the nanodimensional (15-30 nm) inclusions of the second phase enriched in Cr and Fe atoms are located.