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Cited by 57High Entropy Alloys StudiesAdvanced materials and compositesIntermetallics and Advanced Alloy Properties

Refractory High-Entropy HfTaTiNbZr-Based Alloys by Combined Use of Ball Milling and Spark Plasma Sintering: Effect of Milling Intensity

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Shkodich, Natalia, Sedegov, Alexey, Kuskov, Kirill, Busurin, Sergey, Scheck, Yury, Vadchenko, Sergey, Moskovskikh, Dmitry·2020·Metals
DOI 10.3390/met10091268
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Abstract

For the first time, a powder of refractory body-centered cubic (bcc) HfTaTiNbZr-based high-entropy alloy (RHEA) was prepared by short-term (90 min) high-energy ball milling (HEBM) followed by spark plasma sintering (SPS) at 1300 °C for 10 min and the resultant bulk material was characterized by XRD and SEM/EDX. The material showed ultra-high Vickers hardness (10.7 GPa) and a density of 9.87 ± 0.18 g/cm³ (98.7%). Our alloy was found to consist of HfZrTiTaNb-based solid solution with bcc structure as a main phase, a hexagonal closest packed (hcp) Hf/Zr-based solid solution, and Me2Fe phases (Me = Hf, Zr) as minor admixtures. Principal elements of the HEA phase were uniformly distributed over the bulk of HfTaTiNbZr-based alloy. Similar alloys synthesized without milling or in the case of low-energy ball milling (LEBM, 10 h) consisted of a bcc HEA and a Hf/Zr-rich hcp solid solution; in this case, the Vickers hardness of such alloys was found to have a value of 6.4 GPa and 5.8 GPa, respectively.

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  • The intermediate VEC range of 6.87-8 corresponds to mixed phases of FCC and BCC.

    “The intermediate VEC range of 6.87 -8 corresponds to mixed phases of FCC and BCC 37 -39 .”

    From Recent advances in high-entropy superconductors (2024) · cites this paper as [38]

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Authors
Shkodich, N., Sedegov, A., Kuskov, K., Busurin, S., Scheck, Y., Vadchenko, S., & Moskovskikh, D.
Affiliations
  • National University of Science and Technology (RU)
  • NTO IRE-POLUS, LCC, Fryazino, Moscow 141190, Russia
  • Russian Academy of Sciences (RU)
  • Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, Moscow 142432, Russia
Corresponding author
Shkodich, Natalia
ORCID
Venue
Metals
Publisher
MDPI AG
Published
2020-09-20
Volume
10
Issue
9
Pages
1268
ISSN
2075-4701 (ISSN-L)
DOI
10.3390/met10091268
OpenAlex
W3088462644
Cited by
57
References
1
Citations by year
2026: 11 · 2025: 11 · 2024: 8 · 2023: 7 · 2022: 9 · 2021: 9 · 2020: 2
FWCI
3.32
Type
journal article
Language
en
Open access
Licence
Locations
  • Metals (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Russian Science Foundation (18-79-10215)
Topics
  • Physical Sciences › Engineering › Mechanical Engineering › High Entropy Alloys Studies
  • Physical Sciences › Engineering › Mechanical Engineering › Advanced materials and composites
  • Physical Sciences › Engineering › Mechanical Engineering › Intermetallics and Advanced Alloy Properties
Keywords
refractory high-entropy alloys, BCC phase, high-energy ball milling, milling intensity, spark plasma sintering, Vickers hardness, solid solution phases, hexagonal close-packed phase, elemental distribution, powder metallurgy

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