Enhanced wear and corrosion resistances of AlCoCrFeNi high-entropy alloy coatings via high-speed laser cladding

Chong, Zhenzeng; Sun, Yueming; Cheng, Wangjun; Han, Chenyang; Huang, Liufei; Su, Caijin; Jiang, Liheng

doi:10.1016/j.mtcomm.2022.104417

Cited by 15 publications

(7 citation statements)

References 47 publications

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“…The wear rate of the coating was 4.29 × 10 −4 mm 3 Nmm −1 , which was about 10.4 times larger than the wear rate of the substrate (4.5 × 10 −3 mm 3 Nmm −1 ). Chong et al [ 45 ] used a high‐speed laser cladding technique (300 mm s −1 ) to prepare a BCC single‐phase AlCoCrFeNi HEA coating. As compared with the speed of conventional laser cladding (7 mm s −1 ), the high‐speed laser cladding technology of 300 mm s −1 caused uniform BCC dendrites in the same direction, which facilitated the formation of fine grains with uniform distributions of alloying elements.…”

Section: High‐entropy Alloy Coatingsmentioning

confidence: 99%

“…Although the laser cladding coatings of high‐entropy alloys (with a single FCC phase or a single BCC phase) showed good wear‐resistances, the wear‐resistance of the BCC phase coating was found to be better than that of the FCC phase coating. [ 45 ] The wear‐resistance of the coatings was further improved when the FCC phase was converted to a single BCC phase. Xu et al [ 10 ] prepared CoCrFeNiTiAl x ( x = 0, 0.5, 1, 1.5, or 2) HEA‐LC coatings.…”

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%

Section: High‐entropy Alloy Coatingsmentioning

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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“…This process results in a layer with a low dilution rate and excellent bonding properties with the substrate. [12]. Therefore, the use of laser cladding to repair cylinder liner has become more popular lately.…”

Section: Introductionmentioning

confidence: 99%

Macroscopic Characteristic and Properties of Inconel 625 Cladding Layers on a Cylinder Liner Based on Laser Cladding Assisted by a Steady-State Magnetic Field

Wang,

Zhu,

Tian

et al. 2024

Coatings

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Cylinder liners, which are an vital part of marine diesel engines, are prone to damage owing to the pool working conditions of reciprocating friction and electrochemical corrosion. As a burgeoning manufacturing technology, laser cladding has a prospective application on repairing and performance enhancement of cylinder liners. The performance of cladding layers on cylinder liners reported by current studies is not satisfactory. The laser cladding, assisted by the steady state magnetic field on the cylinder liner, is an effectual method to cover the shortage. However, there are few studies about that. In this study, single-track Inconel 625 cladding layers were carried out on a cylinder liner, assisted by a steady-state magnetic field. The effects of the magnetic field intensity and direction on the geometrical characteristics (width, height, penetration, and dilution ratio), microstructure, phase composition, microhardness, wear resistance, and corrosion resistance were investigated. According to the results obtained, adding a magnetic field with a small magnetic field intensity can significantly enhance the flatness, hardness, friction, wear resistance, and corrosion resistance of the cladding layer. Applying a magnetic field in the horizontal direction was conducive to improving the corrosion resistance of the sample. With the application of a vertical magnetic field, the microhardness increased, and wear resistance, as well as the flatness of the cladding layer, were improved.

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“…Currently, research on the high-speed laser cladding of high-entropy alloys is relatively limited, focusing mainly on improving the metal microstructure and enhancing the mechanical properties of the coating. Chong et al [23] utilized high-speed laser cladding technology to prepare an AlCoCrFeNi high-entropy alloy coating on the surface of AISI 1045 steel, which significantly improved the cladding efficiency and processing quality as well as the microhardness and corrosion resistance. A CoCrFeNiMo high-entropy alloy is an alloy system that possesses comprehensive properties [24].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Microstructure and Properties of CoCrFeNiMo High-Entropy Alloy Coating Prepared through High-Speed Laser Cladding

Zhang

Wang

et al. 2023

Coatings

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High-speed laser cladding was introduced to prepare a CoCrFeNiMo high-entropy alloy (HEA) coating. The microstructure, composition distribution, micromechanical properties, and corrosion resistance of the CoCrFeNiMo coating were characterized. As a result, the coating exhibited a dual FCC- and BCC-phase structure, and the grain size of the coating prepared through high-speed laser cladding was only 2~5 μm. The upper and lower parts of the coating were composed of equiaxed cellular crystals and slender columnar crystals, respectively. The interdendritic structure was a Mo-rich phase that was distributed in a network-like pattern. The nanoindentation tests revealed that the interdendritic BCC phase had high hardness and an elastic modulus as well as excellent resistance to deformation, while the intradendritic FCC phase possessed superior crack propagation resistance. In addition, the two phases could generate cooperative elastic deformation during the elastic deformation stage. The electrochemical performance of the coating was tested in 3.5 wt% NaCl solution, and the corrosion potential Ecorr and corrosion current density Icorr of the coating were −0.362 V and 3.69 × 10−6 A/cm2, respectively. The high-speed laser cladding CoCrFeNiMo HEA coating had excellent corrosion resistance thanks to the presence of the easily passivating element Mo and grain refinement.

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Enhanced wear and corrosion resistances of AlCoCrFeNi high-entropy alloy coatings via high-speed laser cladding

Cited by 15 publications

References 47 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

Macroscopic Characteristic and Properties of Inconel 625 Cladding Layers on a Cylinder Liner Based on Laser Cladding Assisted by a Steady-State Magnetic Field

Investigation of the Microstructure and Properties of CoCrFeNiMo High-Entropy Alloy Coating Prepared through High-Speed Laser Cladding

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