High-entropy alcocufeni matrix composites reinforced with tungsten carbide

• Autorzy: Żakowski Michał , Cieślak Grzegorz , Oleszak Dariusz

Identyfikatory

DOI

10.62753/ctp.2025.06.2.2

• Języki publikacji: EN

Abstrakty

EN

In the present study, metallic-ceramic composites were fabricated, with an equimolar high-entropy AlCoCuFeNi alloy as the matrix, and tungsten carbide WC (5 and 10% by volume) as the reinforcing phase. Induction melting and arc melting techniques were used for composite preparation. The metallic matrix of the composite exhibited a two- phase structure consisting of FCC and BCC solid solutions. Microscopic investigations revealed a dendritic micro- structure of the matrix, in which the WC particles were distributed non-homogeneously, regardless of the melting method. Strong precipitation of the chemical composition in the matrix was observed, with interdendritic regions enriched in copper and dendrites enriched in aluminium, nickel and iron. Additionally, besides WC particles, two types of precipitates, with various morphology, were observed in the matrix. The addition of tungsten carbide particles re- sulted in an increase in the composite hardness from approximately 273 HV for the high-entropy alloy to as high as 332 HV for the composite. The appearance of the precipitates can be attributed to the chemical reaction between the liquid matrix and WC, resulting in the formation of complex carbides.

Słowa kluczowe

EN

high-entropy alloys; metal-ceramic composites; induction melting; arc melting; microstructure; hardness

PL

kompozyty metalowo-ceramiczne; topienie indukcyjne; topienie łukowe; mikrostruktura; twardość

• Wydawca: Polskie Towarzystwo Materiałów Kompozytowych
• Czasopismo: Composites Theory and Practice
• Rocznik: 2025
• Tom: R. 25 nr 2
• Strony: 75--81
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Żakowski Michał

• Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Wołoska St., 02-507 Warsaw, Poland

autor

Cieślak Grzegorz

• Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Wołoska St., 02-507 Warsaw, Poland

autor

Oleszak Dariusz

• Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Wołoska St., 02-507 Warsaw, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).