High-Energy Ball Milling and Spark Plasma Sintering of the CoCrFeNiAl High-Entropy Alloy

Alexander S. Rogachev; Nicholas A. Kochetov; Anna V. Panteleeva; Kirill V. Kuskov; Dmitry Yu. Kovalev; Alexander S. Shchukin; Sergey G. Vadchenko; Yury B. Scheck

doi:10.3390/met10111489

Metals (Nov 2020)

High-Energy Ball Milling and Spark Plasma Sintering of the CoCrFeNiAl High-Entropy Alloy

Alexander S. Rogachev,
Nicholas A. Kochetov,
Anna V. Panteleeva,
Kirill V. Kuskov,
Dmitry Yu. Kovalev,
Alexander S. Shchukin,
Sergey G. Vadchenko,
Yury B. Scheck

Affiliations

Alexander S. Rogachev: Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, 142432 Moscow, Russia
Nicholas A. Kochetov: Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, 142432 Moscow, Russia
Anna V. Panteleeva: Center of Functional Nanoceramics, National University of Science and Technology MISiS, 119049 Moscow, Russia
Kirill V. Kuskov: Center of Functional Nanoceramics, National University of Science and Technology MISiS, 119049 Moscow, Russia
Dmitry Yu. Kovalev: Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, 142432 Moscow, Russia
Alexander S. Shchukin: Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, 142432 Moscow, Russia
Sergey G. Vadchenko: Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, 142432 Moscow, Russia
Yury B. Scheck: Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, 142432 Moscow, Russia

DOI: https://doi.org/10.3390/met10111489
Journal volume & issue: Vol. 10, no. 11
p. 1489

Abstract

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Nanocrystalline powder of the CoCrFeNiAl high-entropy alloy was produced by high-energy ball milling (HEBM) and consolidated by spark plasma sintering (SPS). Microstructure and crystal structure transformations occurring in the course of HEBM and SPS processes were explored by Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) and X-Rays Diffraction (XRD) methods. Synthesized materials showed a microhardness of 4000–6000 MPa and electrical resistivity of 0.2 mΩ⋅cm at room temperature.

Published in Metals

ISSN: 2075-4701 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.mdpi.com/journal/metals

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