Preparation and Characterization of TiB2-(Supra-Nano-Dual-Phase) High-Entropy Alloy Cermet by Spark Plasma Sintering

Zhang, Shulei; Sun, Yizhen; Ke, Boren; Li, Yulin; Ji, Wei; Wang, Weimin; Fu, Zhengyi

doi:10.3390/met8010058

Cited by 13 publications

(4 citation statements)

References 28 publications

(43 reference statements)

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“…In general, porosity and grain size have a primary effect on the bending strength of a material. 14),19), 38) Equations (2) and 3) 28, 29) describes the relationship between the bending strength and porosity and grain size of a material:…”

Section: Morphology and Phase Constituents Of The Powdersmentioning

confidence: 99%

“…Wu et al 28) studied TiB 2 30 wt % (FeNi) composite cermets, and the fracture toughness was 19.26 « 0.72 MPa m 1/2 . Zhang et al 29) fabricated TiB 2 5 wt % CoCrFeNiAl HEAs composite cermets with a hardness and flexural strength of 2386 « 18 HV 5 and 820 « 9 MPa, respectively. The research results showed that the CoCrFeNiAl HEAs possess outstanding wettability to TiB 2 ceramics, which is the linchpin to reaching superior properties in a ceramic material.…”

Section: Introductionmentioning

confidence: 99%

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Effect of TiB2 content on the microstructure and mechanical properties of Ti(C,N)–TiB2–FeCoCrNiAl high-entropy alloys composite cermets

Zhu

Cai

et al. 2020

J. Ceram. Soc. Japan

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Composite cermets with different mass ratios of Ti (C,N)/TiB 2 and 10 wt % FeCoCrNiAl high-entropy alloys (HEAs) binder were fabricated by mechanical alloying and vacuum hot press sintering. The effect of the TiB 2 content on the microstructure and mechanical properties of the Ti (C,N)TiB 2 HEAs cermets was systematically examined and is discussed in detail. The microstructure was analyzed by X-ray diffraction (XRD), scanning electron microscopy, and transmission electron microscopy (TEM). The results of this study show that a small amount of Fe 2 B phase was detected in the XRD patterns besides the Ti(C,N) and TiB 2 phase. The TEM observation shows the presence of a HEAs binder phase, which was tightly bound to Ti(C,N) and TiB 2 phases. The grain size of the composite cermets gradually decreased with increasing TiB 2 content increased from 0 to 45 wt %. The relative density of the composite cermets first increased and then decreased with increasing TiB 2 content from 11.25 to 45 wt %. When the TiB 2 content reached 22.5 wt %, the composite cermets exhibited excellent comprehensive performance. The grain size, relative density, and hard phase of the composite cermets were the dominating factors that determined the mechanical properties with increasing TiB 2 content. The relative density, Vickers hardness, bending strength, and fracture toughness of the Ti (C,N)22.5 wt % TiB 2 10 wt % HEAs composite cermets reached 98.

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Section: Morphology and Phase Constituents Of The Powdersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of TiB2 content on the microstructure and mechanical properties of Ti(C,N)–TiB2–FeCoCrNiAl high-entropy alloys composite cermets

Zhu

Cai

et al. 2020

J. Ceram. Soc. Japan

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“…For example, the CoCrFeMnNi alloy [7] showed excellent fracture resistance even at cryogenic temperatures [8,9]. Using HEA binders, several cermet materials have been obtained, including WC-CoCrFeNiMn [10], Ti(C,N)-CoCrFeNiAl [11,12], TiB2-CoCrFeNiTiAl [13,14], TiB2-CoCrFeNiAl [15], and TiB2-TiC-CoCrFeNiTiAl [15]. It was suggested that such materials gave birth to a new family of cermets [17].…”

Section: Introductionmentioning

confidence: 99%

Combustion synthesis of TiC-based ceramic-metal composites with high entropy alloy binder

Рогачев

Вадченко

Кочетов

et al. 2020

Journal of the European Ceramic Society

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Ceramic-metal composites TiC-High-Entropy Alloy (HEA) CoCrFeNiMe (Me = Mn, Ti or Al) were first produced by combustion synthesis method. Self-sustained synthesis occurs due to heat release from exothermic reaction Ti + C = TiC; the binder content was varied between zero and 40-50 wt.%. The combustion velocity and temperature gradually decreased with increasing binder content. Resultant materials consist of TiC grains and two-phase (fcc and bcc) binder. Vickers microhardness (100 g) of compacted cermet materials with 30 wt.% of binder was in the range of 10-17 GPa and increased with increasing bcc to fcc ratio. Based on experimental results and thermodynamic calculations, the mechanism of microstructure formation in TiC-HEA cermets was suggested.

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“…The high-entropy alloys (HEA) have many advantages, such as, high hardness, wear resistance, strength and corrosion resistance, good softening resistance during tempering, and so on [1][2][3][4][5][6]. Therefore, the HEA could be used in many fields.…”

Section: Introductionmentioning

confidence: 99%

Tribological behaviour of the double FeCoNiCrCu_x middle-entropy alloy coatings

Cai

Manladan

Luo

2019

Surface Engineering

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In the present research, the double FeCoCrNiCu x medium-entropy alloy coatings were manufactured on Cr12MoV die steel by laser cladding technology. The cross-section, microstructure, phase, micro-hardness, and tribological behaviour of the coatings were investigated systemically. The dilution effect of the substrate had the weaker effect on the second layer compared to the first layer. The double FeCoCrNiCu x cladding layers only had a single face-centred cubic phase led to the lower micro-hardness and wear resistance. The different atomic radius of the alloying elements in the coatings generated a large lattice dislocation. The face-centred cubic structure of coatings had a higher hardness than that of the traditional face-centred cubic structure. The Cu element is easy to segregate at the grain boundaries to form the Cu-rich solid solution.

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Preparation and Characterization of TiB2-(Supra-Nano-Dual-Phase) High-Entropy Alloy Cermet by Spark Plasma Sintering

Cited by 13 publications

References 28 publications

Effect of TiB<sub>2</sub> content on the microstructure and mechanical properties of Ti(C,N)–TiB<sub>2</sub>–FeCoCrNiAl high-entropy alloys composite cermets

Effect of TiB<sub>2</sub> content on the microstructure and mechanical properties of Ti(C,N)–TiB<sub>2</sub>–FeCoCrNiAl high-entropy alloys composite cermets

Combustion synthesis of TiC-based ceramic-metal composites with high entropy alloy binder

Tribological behaviour of the double FeCoNiCrCu_x middle-entropy alloy coatings

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Preparation and Characterization of TiB2-(Supra-Nano-Dual-Phase) High-Entropy Alloy Cermet by Spark Plasma Sintering

Cited by 13 publications

References 28 publications

Effect of TiB<sub>2</sub> content on the microstructure and mechanical properties of Ti(C,N)–TiB<sub>2</sub>–FeCoCrNiAl high-entropy alloys composite cermets

Effect of TiB<sub>2</sub> content on the microstructure and mechanical properties of Ti(C,N)–TiB<sub>2</sub>–FeCoCrNiAl high-entropy alloys composite cermets

Combustion synthesis of TiC-based ceramic-metal composites with high entropy alloy binder

Tribological behaviour of the double FeCoNiCrCux middle-entropy alloy coatings

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Tribological behaviour of the double FeCoNiCrCu_x middle-entropy alloy coatings