| ArticleName |
Effect of zirconium and vanadium on the structure
formation and properties of SHS metallurgy-obtained Al – Ti – Cr – Ni – VxZr1–x high-entropy alloys |
| ArticleAuthorData |
Pacific National University, Khabarovsk, Russia.
E. H. Ri, Director of the Graduate School of Industrial Engineering, Polytechnic Institute, Doctor of Technical Sciences, e-mail: erikri999@mail.ru
M. A. Ermakov, Associate Professor, Graduate School of Industrial Engineering, Polytechnic Institute, Candidate of Technical Sciences, e-mail: ermakovma@yandex.ru
E. D. Kim, associate professor, Graduate School of Industrial Engineering, Polytechnic Institute, Candidate of Technical Sciences, e-mail: jenya_1992g@mail.ru
V. S. Popova, Postgraduate Student, Graduate School of Industrial Engineering, Polytechnic Institute, e-mail: Alex_Naumov21@pnu.edu.ru |
| Abstract |
High-entropy alloys (HEA) have recently attracted widespread attention due to a new metallurgical approach to the development of alloys. Meanwhile, the problem that hinders the economical production of these alloys is the expensive metal raw materials and high energy costs in vacuum arc melting, which is the most commonly used production method (according to literature sources). To solve this problem, the self-propagating high-temperature synthesis (SHS) method stands out as a potentially inexpensive, fast and simple one. There are several studies on the production of HEA by the SHS method for the AlxCoCrFeNi, CoCrFeNiMn, NiCrCoFeMnAlx and AlCoCrFeNiMe (Me = B, Cu, Ti) alloy systems. The presented work is devoted to establishing the pattern of the influence of zirconium and vanadium additives on the structure formation and properties in the Al – Ti – Cr – Ni – VхZr1-х alloys obtained by aluminothermy using SHS metallurgy. Using optical and electron microscopy, X-ray microprobe and X-ray diffraction analysis, the features of structure formation and liquation processes in the structural components of high-entropy alloys of the Al – Ti – Cr – Ni – VхZr1–х system synthesized by SHS metallurgy were studied. The patterns of changes in the structure and element distribution behavior in the studied alloys were revealed depending on the addition of zirconium and vanadium. It was found that vanadium additions make it possible to homogenize thermite mixtures and obtain a uniform structure in high-entropy alloys of the Al – Co – Cr – Fe – Ni system synthesized by SHS metallurgy. The presence of the main structural components in the studied alloys was confirmed by the results of X-ray diffraction analysis, although the stoichiometry of the identified phases does not coincide with the X-ray microprobe analysis results. The dependence of the effect of additives on the microhardness of the structural components was established.
The research was conducted at the Center for Collective Use “Applied Materials Science” of the FSBEI HE “PNU” with the financial support of the Ministry of Science and Education of the Russian Federation within the framework of R&D of state assignment No. AAAA-A20-120021490002-1. |
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