Microstructure and Wear Resistance of Fe4CoCrNiB0.2Mox (x=0, 0.5, 1) High Entropy Alloys

Bao, Yefeng; Guo, Linpo; Zhong, Chonghui; Song, Qing; Yang, Kè; Jiang, Yongfeng; Wang, Zirui

doi:10.1007/s11595-022-2526-y

Cited by 3 publications

(3 citation statements)

References 41 publications

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“…Also, the promotion of an FCC structure, that was generated in the BCC structure, enhanced the wear‐resistance of the coating. [ 49 ] Furthermore, Bao et al [ 50 ] prepared the Fe 4 CoCrNiB 0.2 Mo x ( x = 0, 0.5, or 1) HEA‐LC coating. This coating had a single BCC structure for x = 0.5, and a BCC + FCC dual structure for x = 1.…”

Section: High‐entropy Alloy Coatingsmentioning

confidence: 99%

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Wear‐Resistance of High‐Entropy Alloy Coatings and High‐Entropy Alloy‐Based Composite Coatings Prepared by the Laser Cladding Technology: A Review

Xie,

Tong,

Bai

et al. 2023

Adv Eng Mater

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With the continuous development of the aviation and aerospace industries, there is an increasing demand for surface coatings that can enhance the wear‐resistance and lubricity of substrates. High‐entropy alloy (HEA) coatings and high‐entropy alloy‐based composite coatings (including ceramic and lubricating phases) have attracted large attention, which is due to their excellent properties. They have, therefore, developed rapidly in the past decade. This article reviews the current status of research on the tribological properties of the HEA coatings and HEA‐based composite coatings that have been prepared by laser cladding technology. The focus is then on the wear‐resistance and wear‐reduction mechanism of the coatings. Furthermore, the review analyzes the influence of element addition, atomic ratio change, and process parameters on the coating organization and properties. The problems that have to be solved in the development of tribology‐based HEAs coatings, and the expected future development of HEA the coatings, are also discussed.

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Section: High‐entropy Alloy Coatingsmentioning

confidence: 99%

“…b) Vickers hardness from the surface to the bulk of Fe 4 CoCrNiB 0.2 Mo x HEAs. c-e) Worn surface morphology of Fe 4 CoCrNiB 0.2 Mo x HEAs c) x = 0, d) x = 0.5, and e) x = 1.Reproduced with permission [50]. Copyright 2022, Springer.…”

mentioning

confidence: 99%

Wear‐Resistance of High‐Entropy Alloy Coatings and High‐Entropy Alloy‐Based Composite Coatings Prepared by the Laser Cladding Technology: A Review

Xie,

Tong,

Bai

et al. 2023

Adv Eng Mater

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“…In addition, the element Ti was also found to enhance the oxide layer [34]. It is also known from the literature that the refractory metals Nb and Mo are suitable for improving the (abrasive) wear resistance, as they have fine eutectic microstructures that show superior mechanical properties such as high hardness, high strength, and high ductility [18,19,22,35,36]. For instance, the fully-eutectic, laser-cladded HEA AlCoCrFeNiNb 0.75 exhibits the best wear behavior compared to their hypoeutectic and hypereutectic derivatives [19].…”

Section: Introductionmentioning

confidence: 96%

Nb and Mo Influencing the High-Temperature Wear Behavior of HVOF-Sprayed High-Entropy Alloy Coatings

2022

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To qualify high-entropy alloys (HEAs) as resource-saving and high-temperature wear-resistant coating materials, high-velocity oxygen fuel (HVOF) coatings produced from the inert gas-atomized powder of Al0.3CrFeCoNi, Al0.3CrFeCoNiNb0.5 and Al0.3CrFeCoNiMo0.75 were investigated in reciprocating wear tests at temperatures at 25, 500, 700 and 900 °C. In addition to the high-temperature wear tests, the microstructure and chemical composition of the three HEAs were analyzed using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). In particular, HVOF coatings are characterized by high hardness (Vickers hardness HV0.1) and low porosity, which were also determined. After high-temperature wear tests, the wear depth was measured using laser scanning microscopy (LSM). It was found that adding Nb and Mo to Al0.3CrFeCoNi significantly reduces the wear depth with increasing temperature. The wear mechanisms change from abrasive wear and delamination (25 °C and 500 °C) to a combination of (abrasion), delamination, adhesion and oxidative wear. Thereby, oxidative wear will be the primary mechanism at 900 °C for all the HVOF coatings investigated. The most important finding is that the adhesion of the oxide layer formed is improved by adding Nb and Mo, resulting in significantly reduced wear depth at 900 °C.

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Recent advances in tribology of high entropy alloys: A critical review

Kumar

2023

Progress in Materials Science

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Microstructure and Wear Resistance of Fe4CoCrNiB0.2Mox (x=0, 0.5, 1) High Entropy Alloys

Cited by 3 publications

References 41 publications

Wear‐Resistance of High‐Entropy Alloy Coatings and High‐Entropy Alloy‐Based Composite Coatings Prepared by the Laser Cladding Technology: A Review

Wear‐Resistance of High‐Entropy Alloy Coatings and High‐Entropy Alloy‐Based Composite Coatings Prepared by the Laser Cladding Technology: A Review

Nb and Mo Influencing the High-Temperature Wear Behavior of HVOF-Sprayed High-Entropy Alloy Coatings

Recent advances in tribology of high entropy alloys: A critical review

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