Slurry Erosion Behavior of AlxCoCrFeNiTi0.5 High-Entropy Alloy Coatings Fabricated by Laser Cladding

Zhao, Jianhua; Ma, Aibin; Ji, Xiulin; Jiang, Jinghua; Bao, Yayun

doi:10.3390/met8020126

Cited by 32 publications

(15 citation statements)

References 37 publications

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“…Zhao et al [127] conducted their research work on the slurry erosion behavior of laser cladding-made highentropy alloy (HEA) coatings. AlCoCrFeNiTi 0.5 HEA coating exhibited excellent slurry erosion prevention at different impingement angles due to its elevated hardness, excellent plasticity and low stacking fault energy.…”

Section: Studies Related To Slurry Erosion Prevention Using Laser Clamentioning

confidence: 99%

Laser cladding technique for erosive wear applications: a review

Singh

Goyal

Kumar

et al. 2020

Mater. Res. Express

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Slurry erosion is a serious menace in most of the hydro machine components all around the globe. Slurry erosion is accountable for heavy economic losses. However, some counter measures are being taken to mitigate the effect of sand particles passing through hydro-machine parts and research is also underway to improve the component surface by applying different surface coatings. Laser cladding is a surface deposition process that is used to achieve very good metallurgical bonding with minimum porosity as compared to other surface coating techniques. In this research paper, an attempt has been made to compile the literature related to laser cladding technology, its applications, process parameters, coating materials and their effectiveness to bestow solutions to various types of surface degradation with special emphasis on slurry erosion problems. This paper will serve as a reference for the researchers working in the area of slurry erosion prevention.Erosion is described as wear induced by solid particles hitting a surface, transferred via a gas flow or entertained in a fluid streaming medium [16]. The impinging angle of the particles and relative velocity determines the abrasive wear on a surface [17]. Hydro abrasive erosion depends upon several parameters such as size of sand, hardness, concentration, shape, quantity, and velocity, in most cases minimizing the impact energy of the particles by monitoring the parameters mentioned or indirectly. Despite this, enormous surface destruction to hydroelectric devices and structures occurs at any stage at a sufficiently elevated velocity, causing scratching and removal of material [18]. It has been learned that because of their excellent corrosion characteristics and acceptable resistance to strong particle erosion, in hydroelectric power plants stainless steels are widely used [16]. Bitter [19] suggested two erosion wear theories: cutting and deformation, according to him, the cutting wear is triggered by the particle velocity element parallel to the target surface, whereas the deformation wear is accountable for the normal component of the velocity. Some researchers [20-24] indicated that hardness of the target material or hardness of the impacting solid particles was dominant for wear of target surface. Wang and Yang [25] noted that a dominant function in the erosion process is the surface hardening of metals. The worn surfaces were analysed by scanning electron microscope and different wear processes such as micro-ploughing, lip formation, platelet, tiny indentation craters, and micro-cracking were described. It was reported that the depletion of materials such as metals and alloys was produced by the micro-cutting and microploughing of strong particles for ductile materials. The crack coalescence results in the removal of large-scale components for brittle materials.Material degradation by the dint of slurry erosion relies on myriad variables that can be classified into three primary groups: the first one associated with fluid flow circumstances (flow speed, partic...

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Section: Studies Related To Slurry Erosion Prevention Using Laser Clamentioning

confidence: 99%

Laser cladding technique for erosive wear applications: a review

Singh

Goyal

Kumar

et al. 2020

Mater. Res. Express

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“…Kunce et al [211] demonstrated that thin-walled structures of highentropy alloys (HEAs) AlCoCrFeNi could be fabricated with LENS technology. They demonstrated that laser scanning speed has a significant effect on microstructure and hardness of fabricated thin-walled element and also demonstrated that increasing the cooling rate during the solidification process reduced the average grain size of alloy [211,212]. WAAM has been described as a low-cost method for the fabrication of large-scale thin-walled structures by expressively decreasing product development time and "buy-to-fly" ratios to the aerospace manufacturing industry [213,214].…”

Section: Thin-walled Parts Qualificationmentioning

confidence: 99%

A state-of-the-art review on energy consumption and quality characteristics in metal additive manufacturing processes

Majeed

Ahmed

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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This paper aims to study the energy consumption and quality characteristics of the parts fabricated by additive manufacturing (AM) technologies with a special focus on metal AM processes. AM is a family of manufacturing techniques, which is broadly used to fabricate complex and lightweight structures. The energy savings during AM processes have a significant influence on the AM industry, only if the quality of the fabricated part meets the requirements. The quality is generally represented by the surface and dimensional quality, mechanical properties, relative density, hardness, etc. The energy saving is important for environmentally benign and cleaner production, and improved product quality is useful for its application as a functional part in the aerospace, automobile, and biomedical industries. A comprehensive review of the energy consumption and quality characteristics of AM-fabricated (with special focus on metal AM) parts was carried out. Firstly, the specific energy consumption of various AM techniques has been reviewed to address the importance of energy and cleaner production. Then, the qualifications of products fabricated by different metal AM techniques have been discussed for different materials, such as titanium alloys, steel alloys, nickel alloys, and aluminum alloys. Also, by considering the practical importance of thin-walled structures fabricated by AM, a detailed analysis of their qualification has been presented. Moreover, different optimization techniques have also been reviewed for various AM process parameters and objectives. Overall, this paper provides an overview of AM, including a survey on the energy consumption and quality characteristics with the development of AM technologies for manufacturing of quality products. Finally, several future research directions are suggested, specifically the need for a framework for metal AM processes for the fabrication of quality products with minimum energy consumption.

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“…In eutectic high entropy alloy (EHEA), if the lamellar eutectic structure is composed of the phase with high hardness and the phase with good toughness, the slurry erosion resistance will be greatly enhanced. Zhao et al [10] reported that the Al 1.0 CoCrFeNiTi 0.5 HEA is composed of simple FCC phase and BBC phase, and its erosion rate is 1.73 times lower than Cr16 alloy. Wu et al [11] reported that with the increase in the aluminum content in Al x CoCrCuFeNi alloys, both the BCC phase proportion and the hardness value increase.…”

Section: Introductionmentioning

confidence: 99%

Superior Slurry Erosion Behavior of a Casting NiCoCrFeNb0.45 Eutectic High Entropy Alloy

Jiang

Wang

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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The flow passage components in hydraulic machinery will be eroded rapidly when running in sand water. The wear resistance of materials commonly used in hydraulic machinery needs to be improved to prevent the failure of hydraulic machinery. New wear-resistant materials are urgently needed to improve the service life of hydraulic machinery. Eutectic high entropy alloy (EHEA) is a new kind of alloys with in situ lamellar structure. NiCoCrFeNb 0.45 EHEA has combined excellent strength and toughness. In this study, slurry erosion tests of NiCoCrFeNb 0.45 EHEA were carried out with different impact angles and impact velocities using a rotary jet erosion test apparatus. The NiCoCrFeNb 0.45 EHEA exhibited significant slurry erosion resistance compared with medium carbon steel 1045 and stainless steel 04Cr13Ni5Mo. The erosion rate of EHEA is much slower. Compared with medium carbon steel and stainless steel, the erosion of EHEA is completed via the accumulation and removal of platelets after plowing and work hardening, accompanied by partial micro-cutting.

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Slurry Erosion Behavior of AlxCoCrFeNiTi0.5 High-Entropy Alloy Coatings Fabricated by Laser Cladding

Cited by 32 publications

References 37 publications

Laser cladding technique for erosive wear applications: a review

Laser cladding technique for erosive wear applications: a review

A state-of-the-art review on energy consumption and quality characteristics in metal additive manufacturing processes

Superior Slurry Erosion Behavior of a Casting NiCoCrFeNb0.45 Eutectic High Entropy Alloy

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