Microstructure and properties of Ti(C, N)–TiB2–FeCoCrNiAl high-entropy alloys composite cermets

“…The specific preparation method can be seen in a previous article. 17) The main characteristics and compositions of the starting powders are shown in Table 1.…”

Section: Composite Cermet Preparationmentioning

confidence: 99%

“…For details of the instrument model and fracture toughness calculation method, please refer to our published papers. 17) The hightemperature oxidation of the composite cermets was tested using a high-temperature box resistor stove [Model KSL-1200X (UL), Hefei, China]. The sintered samples were cut into cuboids of 10.5 © 6 © 4.5 mm 3 .…”

Section: Property Testingmentioning

confidence: 99%

“…This phenomenon has been explained in a previous study. 17) The microstructures of Ti(C,N)TiB 2 -HEA composite cermets with different HEA binder contents are shown in Fig. 2.…”

Section: Phase Constituents and Microstructurementioning

confidence: 99%

“…OL: outer layer; TL: transition oxide layer; IL: inner layer [The Fig. (b) cites previous study which has been publishedin order to compare research results17) ].…”

mentioning

confidence: 99%

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Effect of high-entropy alloy binder content on the microstructure, mechanical properties and oxidation behavior of Ti(C,N)–TiB<sub>2</sub> cermets

Wen

et al. 2021

J. Ceram. Soc. Japan

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High-entropy alloys (HEA) are characterized by unique composition design concepts and excellent performance. As binders for cermet materials, they have been studied in recent years and have shown broad application prospects. In this study, the microstructure, mechanical properties and high-temperature oxidation behavior of Ti(C,N)TiB 2 -HEA composite cermets with different HEA binder contents are investigated. The experimental results indicate that as the HEA content increases from 6 to 14 wt.%, the pores of the composite cermets gradually decrease, and the grain size first increases and then decreases. The hardness of the composite cermets gradually increases, and the bending strength and fracture toughness first increase and then decrease. The highest hardness, bending strength and fracture toughness values are 2008.6 HV 10 , 727 MPa, and 7.9 MPa m 1/2 , respectively. The composite cermets with 14 wt.% HEA binder exhibit superior oxidation resistance. This is because the internal metal atoms diffuse to the surface, which will consume more oxygen and form a dense oxide layer. The diffusion of oxygen to the internal non-oxidized parts will be effectively inhibited. In addition, cracks appear in the oxide layers at 1000°C. As the HEA binder content increases from 6 to 14 wt.%, the cracks gradually disappear during the oxidation process and are replaced by an Al 2 O 3 layer.

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Research status of tribological properties optimization of high-entropy alloys: a review

Zhou

Yang

Zhang³

et al. 2023

J Mater Sci

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Microstructure and properties of Ti(C, N)–TiB2–FeCoCrNiAl high-entropy alloys composite cermets

Cited by 37 publications

References 43 publications

Tribological behavior of Ti(C, N)-TiB2 composite cermets using FeCoCrNiAl high entropy alloys as binder over a wide range of temperatures

Tribological behavior of Ti(C, N)-TiB2 composite cermets using FeCoCrNiAl high entropy alloys as binder over a wide range of temperatures

Effect of high-entropy alloy binder content on the microstructure, mechanical properties and oxidation behavior of Ti(C,N)–TiB<sub>2</sub> cermets

Research status of tribological properties optimization of high-entropy alloys: a review

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