Skip to main content
Log in

Structural and Chemical Microinhomogeneity of the High-Entropy TiVZrNbHfTa Coating

  • PROTECTIVE AND FUNCTIONAL POWDER COATINGS
  • Published:
Powder Metallurgy and Metal Ceramics Aims and scope

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.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

References

  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).

    Article  CAS  Google 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).

  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.

  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).

    Article  CAS  Google 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).

    Article  CAS  Google 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).

    CAS  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).

  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).

    Article  CAS  Google 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).

    Article  CAS  Google 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).

    Article  CAS  Google 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.

  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).

  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).

    Article  CAS  Google Scholar 

  17. D. Williams and C. Barry Carter, Transmission Electron Microscopy—A Textbook for Materials Science, Plenum Press, New York–London (1996), p. 729.

  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).

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to M. I. Danylenko.

Additional information

Translated from Poroshkova Metallurgiya, Vol. 58, Nos. 7–8 (528), pp. 126–132, 2019.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Gorban, V.F., Danylenko, M.I., Krapivka, M.A. et al. Structural and Chemical Microinhomogeneity of the High-Entropy TiVZrNbHfTa Coating. Powder Metall Met Ceram 58, 469–473 (2019). https://doi.org/10.1007/s11106-019-00097-6

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11106-019-00097-6

Keywords

Navigation