AlFeCoNiCu high-entropy alloys formed by spark plasma sintering of a powder mixture and a deposited layer

AlFeCoNiCu high-entropy alloys formed by spark plasma sintering of a powder mixture and a deposited layer Full article

Journal

Science of Sintering
ISSN: 0350-820X

Output data

Year: 2024, Number: 00, Article number : 22, Pages count : 14 DOI: 10.2298/sos240517022b

Authors

Batraev Igor ¹ , Dudina Dina ^1,2 , Ulianitsky Vladimir ¹ , Ukhina Arina ³ , Bokhonov Boris ³ , Samodurova Marina ² , Trofimov Evgeny ²

Affiliations

1	Lavrentyev Institute of Hydrodynamics SB RAS, Novosibirsk, Russia + South Ural State University (National Research University), Chelyabinsk, Russia
2	South Ural State University (National Research University), Lenin Ave. 76, Chelyabinsk 454080, Russia
3	Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze Str. 18, Novosibirsk 630090, Russia

This investigation focuses on the structural characteristics of AlFeCoNiCu high-entropy alloys (HEAs) fabricated using two approaches. The alloys were obtained by the spark plasma sintering (SPS) or hot pressing (HP) treatment of layers deposited by detonation spraying of a mixture of the elemental powders. The feedstock powder mixture used for the spraying was also directly consolidated by SPS under the same conditions (without any pre-alloying treatment). The goal of this work was to conduct a comparative analysis of the compositional and structural features of AlFeCoNiCu HEAs formed by different methods. The SPS treated deposited layer showed a more uniform structure and composition than the alloy obtained directly by SPS of the powder mixture. All alloys processed by SPS or HP were face-centered cubic solid solutions. The alloys obtained from the deposited precursors showed deviations from the nominal composition of the powder mixture. However, the compositional differences and nonuniformities did not affect the hardness of the alloys or the influences of these factors compensated each other.. This work shows that, for practical applications, thick samples of AlFeCoNiCu can be produced by SPS of the elemental powder mixtures, while for thin layers and coatings detonation spraying followed by SPS/HP can be applied.

Batraev I. , Dudina D. , Ulianitsky V. , Ukhina A. , Bokhonov B. , Samodurova M. , Trofimov E.
AlFeCoNiCu high-entropy alloys formed by spark plasma sintering of a powder mixture and a deposited layer
Science of Sintering. 2024. N00. 22 :1-14. DOI: 10.2298/sos240517022b РИНЦ OpenAlex

Submitted:	May 17, 2024
Accepted:	Jun 5, 2024

Elibrary:	67896186
OpenAlex:	W4399606138

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