TiC strengthened CoCrNi medium entropy alloy: Dissolution and precipitation of TiC and its effect on microstructure and performance

Tong, Yonggang; CAI, Yan-lin; Hu, Yongle; Huang, Hongfeng; ZHANG, Xian-cheng; Zhang, Hao

doi:10.1016/s1003-6326(22)65946-6

Cited by 10 publications

(6 citation statements)

References 21 publications

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“…After adding 10 wt.% TiC, the phase structure of the coating was still the single BCC phase. No obvious peaks in the TiC phase diffraction were found, which was similar to the report in [19]. In addition, the diffraction peak was slender, indicating that the crystal crystallinity was high and the grain size was large [21].…”

Section: Resultssupporting

confidence: 82%

“…At present, the types of ceramic-reinforced particles added to alloy systems mainly include carbide ceramics, nitride ceramics, oxide ceramics, nickelide ceramics, composite ceramics and natural ceramics [14,15], such as WC, TiC, SiC in carbides and Si3N4, BN, AlN in nitrides, etc. In particular, TiC ceramic particles have shown excellent strengthening effects in related reports [16][17][18][19].…”

Section: Introductionmentioning

confidence: 80%

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Structure and Wear Resistance of TiC-Reinforced Al1.8CrCuFeNi2 High-Entropy Alloy Coating Using Laser Cladding

et al. 2023

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Al1.8CrCuFeNi2 high-entropy alloy coatings with different TiC contents were prepared using laser cladding. The effect of TiC on the microstructure, hardness and wear resistance of the coatings was investigated. It was found that the phase structure of the coating with 10 wt.% TiC was a single BCC phase with no other precipitated phase. When 20 wt.% TiC was added, the phase structure of the coating was a BCC phase and TiC phase. When the TiC content increased to 30 wt.%, more TiC-reinforcing phase was formed. With the increase in the TiC content, the hardness of the high-entropy alloy coating was enhanced and the wear loss clearly decreased, which was closely related to the change in the coating structure. The addition of TiC to high-entropy alloys plays the role of fine-grain strengthening and dispersion strengthening.

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Section: Resultssupporting

confidence: 82%

Section: Introductionmentioning

confidence: 80%

Structure and Wear Resistance of TiC-Reinforced Al1.8CrCuFeNi2 High-Entropy Alloy Coating Using Laser Cladding

et al. 2023

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“…Under the extremely high strain rate and large plastic deformation, the grain size was reduced from 16 m to under 5 m, thus inducing dynamic recrystallization [40]. Furthermore, these alloys can also be reinforced with particles such as Al2O3, SiC and TiC to significantly increase the yield strength, compressive strength and resistance to corrosion [41]. Other methods can also be used to improve the properties of such alloy, such as introducing lattice defects through cold rolling and annealing [42] or introducing nano-scale features through oxide dispersion strengthening [43].…”

Section: Meas As Structural Materialsmentioning

confidence: 99%

A Fresh Perspective on Medium Entropy Alloys Applications as Coating and Coating Substrate

Nartita¹,

Ioniță²,

Demetrescu³

et al. 2022

AnnalsARSciPhysChem

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In order to evolve as a society we need increasingly efficient technologies and implicitly materials with great performance that promote safety and sustainability. The discovery of high entropy alloys was received with much enthusiasm due to the possibility of designing new materials with improved properties, that could be used in applications that require extreme conditions or a very specific combination of properties. As the research in this area is continuously increasing and the results are very promising, this review focuses on the most recent investigations on medium entropy alloys (MEAs) applications, highlighting their properties, but taking into consideration other factors, such as economic and environmental factors. Additionally, considering the high cost associated with MEAs fabrication, MEA coatings are also explored, as they are nowadays regarded as a more convenient procedure to obtain the required properties for various substrate materials.

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“…Moreover, the fine TiC particles are uniformly distributed in the alloy matrix and can be used as nucleation sites for FCC grains, thus refining the alloy grain size. TiC-strengthened CoCrNi medium entropy also achieved excellent mechanical properties (Tong et al , 2022). In a previous study (Cheng et al , 2018; Liu et al , 2019), we prepared Ti- and C-added FeCoCrNiMn HEAs by powder metallurgy.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ti and C addition on oxidation resistance of FeCoCrNiMn high entropy alloys prepared by powder metallurgy

Wang,

Liu,

et al. 2024

ACMM

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Purpose The purpose of this paper is to study the high temperature oxidation behavior of Ti and C-added FeCoCrNiMn high entropy alloys (HEAs). Design/methodology/approach Cyclic oxidation method was used to obtain the oxidation kinetic profile and oxidation rate. The microstructures of the surface and cross section of the samples after oxidation were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). Findings The results show that the microstructure of the alloy mainly consisted of FCC (Face-centered Cubic Structure) main phase and carbides (M7C3, M23C6 and TiC). With the increase of Ti and C content, the microhardness, strength and oxidation resistance of the alloy were effectively improved. After oxidation at a constant temperature of 800 °C for 100 h, the preferential oxidation of chromium in the chromium carbide determined the early formation of dense chromium oxide layers compared to the HEAs substrate, resulting in the optimal oxidation resistance of the TC30 alloy. Originality/value More precipitated CrC can preferentially oxidize and rapidly form a dense Cr2O3 layer early in the oxidation, which will slow down the further oxidation of the alloy.

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TiC strengthened CoCrNi medium entropy alloy: Dissolution and precipitation of TiC and its effect on microstructure and performance

Cited by 10 publications

References 21 publications

Structure and Wear Resistance of TiC-Reinforced Al1.8CrCuFeNi2 High-Entropy Alloy Coating Using Laser Cladding

Structure and Wear Resistance of TiC-Reinforced Al1.8CrCuFeNi2 High-Entropy Alloy Coating Using Laser Cladding

A Fresh Perspective on Medium Entropy Alloys Applications as Coating and Coating Substrate

Effect of Ti and C addition on oxidation resistance of FeCoCrNiMn high entropy alloys prepared by powder metallurgy

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