Microbeam plasma arc remanufacturing: Effects of Al on microstructure, wear resistance, corrosion resistance and high temperature oxidation resistance of AlxCoCrFeMnNi high-entropy alloy cladding layer

Ye, Fuxing; Jiao, Zhipeng; Yan, Shuai; Guo, Liu; Feng, Lingzhi; Yu, Jianxing

doi:10.1016/j.vacuum.2020.109178

Cited by 64 publications

(16 citation statements)

References 30 publications

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“…The continuity of Al 2 O 3 becomes better with an increase in Al content; however, when the x of Al x (NiCoCrFe) 100−x is less than 15, the oxidation rate increases significantly at the ini-tial stage of oxidation. The Al 2 O 3 formed with low Al content is discontinuous, thus reducing the antioxidant activity [67][68].…”

Section: Effect Of Alloy Elements On High-temperature Oxidation 231 Effect Of Feconicr-based Alloy Elements On Hightemperature Oxidationmentioning

confidence: 99%

“…The high-temperature oxidation process of high-entropy alloys is most commonly performed in a vacuum arc furnace [90][91]. High-entropy alloys are also prepared by mechanical alloying [92][93], laser cladding [68,94], magnetron sputtering [95][96][97][98][99], and 3D printing [100]. High-entropy alloys proves the high-temperature oxidation resistance.…”

Section: Effect Of the Preparation Process On High-temperature Oxidation Of High-entropy Alloysmentioning

confidence: 99%

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Influencing factors and mechanism of high-temperature oxidation of high-entropy alloys: A review

Pan

et al. 2021

Int J Miner Metall Mater

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High-temperature oxidation is a common failure in high-temperature environments, which widely occur in aircraft engines and aerospace thrusters; as a result, the development of anti-high-temperature oxidation materials has been pursued. Ni-based alloys are a common high-temperature material; however, they are too expensive. High-entropy alloys are alternatives for the anti-oxidation property at high temperatures because of their special structure and properties. The recent achievements of high-temperature oxidation are reviewed in this paper. The high-temperature oxidation environment, temperature, phase structure, alloy elements, and preparation methods of high-entropy alloys are summarized. The reason why high-entropy alloys have anti-oxidation ability at high temperatures is illuminated. Current research, material selection, and application prospects of high-temperature oxidation are introduced.

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Section: Effect Of Alloy Elements On High-temperature Oxidation 231 Effect Of Feconicr-based Alloy Elements On Hightemperature Oxidationmentioning

confidence: 99%

Section: Effect Of the Preparation Process On High-temperature Oxidation Of High-entropy Alloysmentioning

confidence: 99%

Influencing factors and mechanism of high-temperature oxidation of high-entropy alloys: A review

Pan

et al. 2021

Int J Miner Metall Mater

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“…However, the influence of Al on the corrosion resistance of HEAs seems to remain controversial. 39,[108][109][110] Therefore, whether Al can also enhance the corrosion resistance of FeCoCrNi-based HEA coatings has already drawn much attention. To reveal the influence of Al on the corrosion resistance of CoCrFeNi HEA coatings, Shi et al 111 used a high-throughput synthesis and radio frequency (RF) magnetron sputtering system to prepare Al x (CoCrFeNi) 100−x (x = 4.5-40) HEA coatings and systematically evaluated the effect of Al.…”

Section: Corrosion Research and Mechanism Of Hea Coatingsmentioning

confidence: 99%

Review—Corrosion-Resistant High-Entropy Alloy Coatings: A Review

Cheng¹,

Pan²,

Fu³

et al. 2021

J. Electrochem. Soc.

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For a long time, the corrosion problem of materials has been an essential factor in restricting high-tech and national economic development. As an effective means of corrosion protection, surface coatings have drawn extensive attention in the field of material corrosion. Performance improvement and a new composition system of high-entropy alloys (HEAs) have made HEA coatings a research hotspot. HEA coatings inherit the “four core effects” of bulk HEAs, especially high entropy and sluggish diffusion, making high-quality coatings exhibit outstanding corrosion resistance. At present, many reports have focused on the performance of HEA coatings in the field of severe corrosion environments. This article reviews the process parameters and different element contents on the corrosion resistance of HEA coatings in recent years. This paper describes the advantages and excellent corrosion resistance of HEA coatings, including the preparation methods and classification of HEA coatings. Moreover, exploration of the corrosion behavior and the mechanism of HEA coatings are described, and the influence of passivation behavior and microstructure change on the corrosion resistance of HEA coatings are discussed. Finally, the prospect of research on corrosion-resistant HEA coatings is proposed, and possible future research directions and ideas are suggested.

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“…This also confirms the results of previous studies, because laser cladding has a higher cooling rate, the higher solidification rate is beneficial to the formation of BCC phase and improves the hardness. [6,12,26,27]. The introduction of Ti element can promote the passivation behavior of the coating due to the formation of TiO 2 and Ti 2 O 3 phases.…”

Section: Elementmentioning

confidence: 99%

“…At the same time, according to the previous calculation of the crystallite size, it can be proved that when x = 0.5, the crystallite size difference between the BCC1 and BCC2 phases is the smallest, so its corrosion resistance performance is the best. Figure 10 shows the comparison of the self-corrosion potential Ecorr and the self-corrosion current density Icorr of the six HEAs: CoCrFeNiTiAlx, CoCrFeNi, AlxCoCrFeNi, AlxCoCrFeMnNi, CoCrFeNiAiTix, and AlxCoCrFe2.7NiMo [6,12,26,27]. The introduction of Ti element can promote the passivation behavior of the coating due to the formation of TiO2 and Ti2O3 phases.…”

Section: Elementmentioning

confidence: 99%

Microstructure Evolution and Properties of Laser Cladding CoCrFeNiTiAlx High-Entropy Alloy Coatings

Jianru

et al. 2020

Coatings

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High-entropy alloy (HEA) coatings of CoCrFeNiTiAlx (x = 0, 0.5, 1, 1.5, 2) were prepared on the surface of AISI1045 steel by laser cladding. The effects of the Al content on the microstructure, composition, phase constitution, and wear and corrosion resistance of the coatings were investigated. The results showed that when increasing the Al element content from 0 to 0.5, the phase constitution of the CoCrFeNiTiAlx coating changed from a single Face-centered cubic (FCC) phase to Body-centered cubic 1 (BCC1) and Body-centered cubic 2 (BCC2) phases, with a small amount of Laves phase, which obviously improved the friction and corrosion resistance of the coating. With further enhancing of the Al content, the amount of BCC1 phase increased, while the BCC2 phase and the Laves phase decreased. The CoCrFeNiTiAl2 HEA coating transformed into a single BCC1 phase, with retrogressive wear and corrosion resistance. It was found that the Al0.5 alloy coating exhibits excellent wear resistance, high hardness, and corrosion resistance in a 3.5 wt.% NaCl solution. Furthermore, the effect of the Al content on the microstructure, phase, and the relating properties of the CoCrFeNiTiAlx HEA coatings is also discussed.

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Microbeam plasma arc remanufacturing: Effects of Al on microstructure, wear resistance, corrosion resistance and high temperature oxidation resistance of AlxCoCrFeMnNi high-entropy alloy cladding layer

Cited by 64 publications

References 30 publications

Influencing factors and mechanism of high-temperature oxidation of high-entropy alloys: A review

Influencing factors and mechanism of high-temperature oxidation of high-entropy alloys: A review

Review—Corrosion-Resistant High-Entropy Alloy Coatings: A Review

Microstructure Evolution and Properties of Laser Cladding CoCrFeNiTiAlx High-Entropy Alloy Coatings

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