Structural and Chemical Microinhomogeneity of the High-Entropy TiVZrNbHfTa Coating
PROTECTIVE AND FUNCTIONAL POWDER COATINGS
First Online:
- 3 Downloads
The structural and chemical microinhomogeneity of the high-entropy TiVZrNbHfTa coating is studied. Electron microprobe analysis shows that the content of elements varies within 10 at.% at a distance of several nanometers. The density of (s + d) electrons remains constant. High-resolution electron microscopy used to examine the fine structure found clusters with the size close to the ‘periodicity’ of the chemical inhomogeneity.
Keywords
high-entropy coating analytical electron microscopy clusters chemical inhomogeneityReferences
- 1.J.W. Yeh, Y.L. Chen, S.J. Lin, and S.K. Chen, “High-entropy alloys—a new era of exploitation,” Mater. Sci. Forum, 560, 1–9 (2007).CrossRefGoogle Scholar
- 2.S.A. Firstov, V.F. Gorban, N.A. Krapivka, and E.P. Pechkovski, “Mechanical properties of cast multicomponent alloys at high temperatures,” Sovr. Probl. Fiz. Materialoved., No. 17, 126–139 (2008).Google Scholar
- 3.S.A. Firstov, V.F. Gorban, N.A. Krapivka, and E.P. Pechkovksi, “A new class of nanomaterials with unique properties produced from high-entropy multicomponent alloys,” in: Physicochemical Fundamentals for Development and Modification of Micro- and Nanostructures [in Russian], Nauch. Fiz. Tekh. Tsentr Min. Nauki Obraz., Kharkiv (2011), pp. 186–191.Google Scholar
- 4.S. Ranganathan, “Alloyed pleasures: multimetallic cocktails,” Curr. Sci., 85, No. 10, 1404–1406 (2003).Google Scholar
- 5.S.A. Firstov, V.F. Gorban, and N.A. Krapivka, “Effect of electron density on phase composition of high-entropy equiatomic alloys,” Powder Metall. Met. Ceram., 54, No. 9–10, 607–613 (2016).CrossRefGoogle Scholar
- 6.V.F. Gorban, N.A. Krapivka, and S.A. Firstov, “High-entropy alloys—electron density—phase composition—lattice parameter—properties,” Fiz. Met. Metalloved., 118, No. 8, 1–13 (2017).Google Scholar
- 7.V.F. Gorban, N.A. Krapivka, S.A. Firstov, and D.V. Kurilenko, “Contribution of different parameters to the mechanical properties of high-entropy bcc alloys,” Fiz. Met. Metalloved., 119, No. 5, 504–509 (2018).Google Scholar
- 8.D.G. Pettifor, “Theory of the crystal structures of transition metals,” J. Phys. (Proc. Phys. Soc.), 3, 367 (1970).CrossRefGoogle Scholar
- 9.Y. Zhang and Y.J. Zhou, “Solid solution formation criteria for high entropy alloys,” Mater. Sci. Forum, No. 561–565, 1337–1339 (2007).Google Scholar
- 10.S.A. Firstov, V.F. Gorban, E.P. Pechkovski, and N.A. Mameka, “Relation of strength characteristics with automatic indentation indicators,” Materialovedenie, No. 11, 26–31 (2007).Google Scholar
- 11.V.F. Gorban and E.P. Pechkovksi, “Instrumented indentation for determining the structural state of materials,” Powder Metall. Met. Ceram., 49, No. 7–8, 424–429 (2010).CrossRefGoogle Scholar
- 12.S.A. Firstvov, V.F. Gorban, N.I. Danilenko, M.V. Karpets, A.A. Andreev, and E.S. Makarenko, “Thermal stability of superhard nitride coatings from high-entropy multicomponent Ti–V–Zr–Nb–Hf alloy,” Powder Metall. Met. Ceram., 52, No. 9–10, 560–566 (2014).CrossRefGoogle Scholar
- 13.L. Vegard, “The constitution of the mixed crystals and the filling of space of the atoms,” Z. Phys., 5, No. 1, 17–26 (1921).CrossRefGoogle Scholar
- 14.V.F. Gorban, N.A. Krapivka, and S.A. Firstov, “Production of cast composite amorphous–nanocrystalline titanium and chromium alloys,” in: Nanostructured Functional Coatings and Materials [in Russian], Khark. Fiz. Tekh. Inst., Kharkiv (2007), pp. 184–187.Google Scholar
- 15.N.I. Danilenko, Yu.N. Podrezov, B.V. Borts, A.A. Pakhomenko, and A.T. Lopata, “Analytical electron microscopy for studying nanolayers in the contact area of bimetals subjected to hot rolling in vacuum,” Nauk. Not. Mizhvuz. Zb., No. 31, 109–113 (2011).Google Scholar
- 16.S. Maiti and W. Steurer, “Structural-disorder and its effect on the mechanical properties in single-phase TaNbHfZr high-entropy alloys,” Acta Mater., 106, 87–97 (2016).CrossRefGoogle Scholar
- 17.D. Williams and C. Barry Carter, Transmission Electron Microscopy—A Textbook for Materials Science, Plenum Press, New York–London (1996), p. 729.Google Scholar
- 18.S.A. Firstov, T.G. Rogul, N.A. Krapivka, S.S. Ponomarev, V.N. Tkach, V.V. Kovylyaev, V.F. Gorban, and M.V. Karpets, “Solid-solution hardening of high-entropy AlTiVCrNbMo alloy,” Deform. Razrush. Mater., No. 2, 9–16 (2013).Google Scholar
Copyright information
© Springer Science+Business Media, LLC, part of Springer Nature 2019