Microstructure and properties of laser cladding NiCrBSi coating assisted by electromagnetic-ultrasonic compound field

Hu, Guofang; Yang, Yong; Sun, Renjuan; Qi, Kang; Lu, Xin; Li, Jindong

doi:10.1016/j.surfcoat.2020.126469

Cited by 50 publications

(8 citation statements)

References 32 publications

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“…The most significant reduction in the friction coefficient was observed when ultrasonic vibration was applied at a 45 • angle. Hu et al [32] investigated the synergistic effects of ultrasonic, alternating magnetic, and direct current electric fields to enhance laser surface fusion cladding, and examined their impact on molten pool fluid dynamics. Their findings revealed that electromagnetic force and ultrasonic fields can significantly alter fluid flow patterns within the melt pool, leading to uniform grain refinement and homogeneous elemental distribution in the molten cladding layer.…”

Section: Laser Claddingmentioning

confidence: 99%

Surface Modification of 42CrMo Steels: A Review from Wear and Corrosion Resistance

Zhang,

Wang,

Liu

et al. 2024

Coatings

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This work reviews surface modification techniques for improving the wear and corrosion resistance of 42CrMo steel. The advantages and disadvantages of various methods, including thermal spraying, deposition, hardfacing, laser cladding, nitriding, and laser surface treatment, are discussed. The review elaborates on the materials commonly employed in laser cladding technology, including iron-based, cobalt-based, nickel-based, and high-entropy alloys and reinforced composite coatings. Furthermore, the mechanisms and methods of improving the wear and corrosion resistance of 42CrMo steel are summarized. Finally, this review presents research shortcomings and future opportunities of surface modification techniques. This review also provides a theoretical guide for the application of 42CrMo steel.

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Section: Laser Claddingmentioning

confidence: 99%

Surface Modification of 42CrMo Steels: A Review from Wear and Corrosion Resistance

Zhang,

Wang,

Liu

et al. 2024

Coatings

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“…The mean value of gray correlation coefficient (GRC) of different dimensions of each factor is taken as the result of quantitative expression of the correlation degree between the reference series and the comparison series, and the result of ranking them is used as the gray relationship grade (GRG) [23][24][25][26][27].…”

Section: A Multi-parameter Optimization Based On Grey-fuzzy Taguchi A...mentioning

confidence: 99%

“…Meanwhile, the equiaxed crystals in the middle of the cladding layer show a trend of getting bigger as they get closer to the top of the cladding layer (figures 11(b), (c), (d)). The closer to the top of the coating, the more obvious the heat dissipation, the temperature gradient dominates, so that G × R decreases and the equiaxed crystal becomes larger [25,26].…”

Section: Phase and Microstructure Characteristicsmentioning

confidence: 99%

Multi-objective optimization of process parameters of laser cladding 15-5PH alloy powder based on gray-fuzzy taguchi approach

Zhou

et al. 2023

Eng. Res. Express

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Laser cladding is a new surface treatment technology that is widely used for surface modification of metal parts, and the high quality of the surface geometry of the cladding layer can save a lot of resources for the company. To obtain high quality of the clad layer, the L25 Taguchi experiment of laser cladding process parameters was designed to laser-clad a single 15-5PH layer on the surface of 45# steel; the effect of process parameters on the surface morphology and dilution rate of the coating was determined by ANOVA; the optimal combination of process parameters was obtained by combining gray correlation and fuzzy inference system method. The ANOVA results show that the scanning speed among the laser cladding process parameters plays a key role in obtaining the best superposition of the four geometrical features of the cladding layer simultaneously; With the optimization objectives of larger clad width and height, smaller clad depth, and 30% dilution rate, the optimal combination of process parameters, (P: 600W, V: 500mm/min, F: 1.3r/min), obtained based on the Gray-fuzzy Taguchi Approach, was compared and analyzed to find a significant improvement in the geometric quality characteristics of the optimized clad layer. The analysis of microstructure, physical phase, hardness, wear resistance and corrosion resistance showed that the 15-5PH clad layer was able to effectively enhance the surface properties of the 12Cr13 substrate. The optimization method proposed in this study can solve the problem of parameter optimization in the industrial multi-parameter and multi-response processes.

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“…This could result in a reduction in the number of defects in the coating and a significant improvement in the wear resistance of the coating. According to previous studies, EMF assistance improved coating performance in reducing residual stress, inhibiting pores and cracks, reducing surface roughness [17], and improving corrosion and wear resistance [18][19][20][21]. Zhou et al [22] found that the EMF-assisted laser cladding mainly contributed to electromagnetic stirring and Joule thermal effect, and an appropriate magnetic field intensity contributed to stirring the molten pool and refining the grains.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Electromagnetic Field-Assisted Laser-Clad Norem02 Iron-Based Cemented Carbide Coating

Wang,

Gui,

et al. 2023

Materials

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An electromagnetic field-assisted (EMF-assisted) laser cladding technique was used to prepare Norem02 iron-based cemented carbide coatings on 304 stainless steels. The coatings then were characterized in terms of their microstructure, microhardness, residual stress, and wear resistance. The results indicated that EMF did not change the phase composition of the Norem02 iron-based cemented carbide coating, but significantly affected its microstructure and properties. EMF accelerated the formation of more uniform and refined microstructure. With an increasing current intensity of EMF to 40 A, the dendritic and columnar crystal structure of the coating gradually transformed into uniform and fine equiaxed grains. However, when the EMF current intensity was increased to 80 A, a small number of small dendrites and columnar crystals began to appear at the top and bottom of the coating. Accordingly, the microhardness first increased, then decreased, and achieved a max of 376.9 HV0.2 at EMF current intensity of 40 A. EMF also improved the wear resistance of the coatings, reduced the cracking sensitivity, and reduced residual stress on the surface by 45.2%.

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Microstructure and properties of laser cladding NiCrBSi coating assisted by electromagnetic-ultrasonic compound field

Cited by 50 publications

References 32 publications

Surface Modification of 42CrMo Steels: A Review from Wear and Corrosion Resistance

Surface Modification of 42CrMo Steels: A Review from Wear and Corrosion Resistance

Multi-objective optimization of process parameters of laser cladding 15-5PH alloy powder based on gray-fuzzy taguchi approach

Microstructure and Properties of Electromagnetic Field-Assisted Laser-Clad Norem02 Iron-Based Cemented Carbide Coating

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