Microstructure evolution and mechanical properties of CrFeNixV0.64Ta0.36 eutectic high-entropy alloys

Lin, Xin; Wang, Mingliang; Guang-yu, Ren; Qiao, Dongxu; Lu, Yiping; Wang, Tongmin; Li, Tingju

doi:10.1016/j.matchar.2021.111449

Cited by 11 publications

(4 citation statements)

References 36 publications

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“…The elements of group B, on the other hand, mix easily to produce ordered solid solutions or intermetallic compounds because they have very negative enthalpies of mixing. (Cr,Ni,V)-rich (Fe,Ta)-rich [41] The phase diagrams of multi-primary element alloys are very complex, making it impossible to find eutectic spots in EHEA precisely. In the as-cast state, CoCrFeNi alloys form a basic FCC solid solution structure.…”

Section: Methodsmentioning

confidence: 99%

High-Temperature Thermal Stability of Hot Isostatic Pressed Co25.1Cr18.8Fe23.3Ni22.6Ta8.5Al1.7 (at%) Eutectic High-Entropy Alloy

Li,

Wu,

Xie

et al. 2024

Metals

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An eutectic high-entropy alloy (EHEA) consisting mainly of a face-centered cubic (FCC) phase and a C14 Laves phase with the compositions of Co25.1Cr18.8Fe23.3Ni22.6Ta8.5Al1.7 (at%) was successfully prepared by hot isostatic pressing. The present EHEA exhibits a skeleton-type Laves phase structure, deviating from typical EHEA structures. After a series of annealing treatments at 1000 °C for different durations (ranging from 0 to 150 h), the Co3Ta phase precipitated after annealing. The mechanical properties measured at 850 °C showed a tensile strength of 441 MPa and an elongation of 3.3%. The results of the high-temperature tests showed that the mechanical properties of this alloy did not change significantly before and after annealing, and its microstructure showed a high degree of stability, which suggests that the material has some potential for use in high-temperature environments.

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Section: Methodsmentioning

confidence: 99%

High-Temperature Thermal Stability of Hot Isostatic Pressed Co25.1Cr18.8Fe23.3Ni22.6Ta8.5Al1.7 (at%) Eutectic High-Entropy Alloy

Li,

Wu,

Xie

et al. 2024

Metals

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“…They are supposed to turn the original single phase into eutectic microstructures. This is mainly attributed to the large difference in mixing enthalpies between the high entropy-based elements and the eutectic forming elements [ 38 ]. Gwalani et al [ 33 ] investigated the influence of B2 precipitates on the wear resistance of the hypoeutectic Al 0.5 CoCrFeNi HEA by adding 0.5 mole of Al to the CrFeCoNi system.…”

Section: Wear Resistance Of Heasmentioning

confidence: 99%

A review on wear, corrosion, and wear-corrosion synergy of high entropy alloys

Zirari,

Trabadelo

2024

Heliyon

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“…Al 2 O 3 ceramics are widely used in electronic industries, aerospace, and other fields owing to having a series of excellent properties such as high mechanical strength, corrosion resistance, high‐temperature resistance, good electrical insulation properties, and a series of excellent properties 1–3 . However, the inherent brittleness of ceramics makes it difficult to manufacture ceramic components with large dimensions or complex shapes, limiting their application 4–7 …”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3] However, the inherent brittleness of ceramics makes it difficult to manufacture ceramic components with large dimensions or complex shapes, limiting their application. [4][5][6][7] Therefore, reliable ceramic joining tech-nology has great application potential in manufacturing large or complex-shaped ceramic components.…”

Section: Introductionmentioning

confidence: 99%

Effect of TiO₂ addition on microstructure and mechanical properties of Al₂O₃ ceramic joints brazed with Ag‐CuO fillers

Yang,

Zhao,

et al. 2024

Int J Applied Ceramic Tech

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In our work, 0.5 mol.% TiO2 was added to Ag‐xCuO (x = 2, 4, 8 mol.%) fillers whose compositions at 1050°C were in the L2 single liquid phase region, the boundary of the miscible phase region, and the L1+L2 miscible phase region, respectively. The role of TiO2 was derived by comparing the quenching microstructure of the fillers on the Al2O3 ceramics and the effect on the interfacial microstructure and shear strength of the joints before and after the addition of TiO2. The results showed that the TiO2 would dissolve into the CuO‐rich L1 liquid phase of the filler, leading it to spread outside the molten droplet. When brazing with Ag‐4CuO‐0.5TiO2 filler, the CuO at the joint interface almost completely disappeared, and the shear strength of the joint was significantly reduced. In contrast, the joint strength showed a small increase when using Ag‐8CuO‐0.5TiO2 filler, as the excess CuO at the interface of the brazed joint was reduced. When the filler composition was in the L2 single liquid phase region, CuO was diffusely distributed throughout the molten droplet. TiO2 was hardly contacted with CuO and its addition had no significant effect on the interfacial microstructure and the shear strength of the joints.

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Microstructure evolution and mechanical properties of CrFeNixV0.64Ta0.36 eutectic high-entropy alloys

Cited by 11 publications

References 36 publications

High-Temperature Thermal Stability of Hot Isostatic Pressed Co25.1Cr18.8Fe23.3Ni22.6Ta8.5Al1.7 (at%) Eutectic High-Entropy Alloy

High-Temperature Thermal Stability of Hot Isostatic Pressed Co25.1Cr18.8Fe23.3Ni22.6Ta8.5Al1.7 (at%) Eutectic High-Entropy Alloy

A review on wear, corrosion, and wear-corrosion synergy of high entropy alloys

Effect of TiO₂ addition on microstructure and mechanical properties of Al₂O₃ ceramic joints brazed with Ag‐CuO fillers

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Microstructure evolution and mechanical properties of CrFeNixV0.64Ta0.36 eutectic high-entropy alloys

Cited by 11 publications

References 36 publications

High-Temperature Thermal Stability of Hot Isostatic Pressed Co25.1Cr18.8Fe23.3Ni22.6Ta8.5Al1.7 (at%) Eutectic High-Entropy Alloy

High-Temperature Thermal Stability of Hot Isostatic Pressed Co25.1Cr18.8Fe23.3Ni22.6Ta8.5Al1.7 (at%) Eutectic High-Entropy Alloy

A review on wear, corrosion, and wear-corrosion synergy of high entropy alloys

Effect of TiO2 addition on microstructure and mechanical properties of Al2O3 ceramic joints brazed with Ag‐CuO fillers

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Effect of TiO₂ addition on microstructure and mechanical properties of Al₂O₃ ceramic joints brazed with Ag‐CuO fillers