Effect of Rare-Earth La2O3 on Tribological Properties of Laser Cladding Nickel-Based Coatings on 35CrMoV Alloy Steel

Gao, Zhongtang; Zhang, Shuqing; Ren, Congcong; Yu, Yuan; Gao, Zhiming; Zhang, Chuanwei

doi:10.1007/s11665-023-08017-x

Cited by 7 publications

(2 citation statements)

References 29 publications

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“…Figure 10a shows the friction coefficient curves of the coating under different mechanical vibration frequencies. Under the same experimental conditions, the material with a small friction coefficient has better wear resistance [27]. It can be observed from Figure 10a that with the increase of wear test time, the friction coefficient of the composite coating without mechanical vibration gradually increases from 0.4 to 0.6.…”

Section: Wear Resistance and Hardness Of The Coatingmentioning

confidence: 84%

Effect of Mechanical Vibration on Microstructure and Properties of Laser Cladding WC-Reinforced Nickel-Based Alloy Coatings

Gao

Ren

et al. 2023

Coatings

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Ni-WC composite coatings on 35CrMoV alloy surface were successfully prepared by mechanical vibration field-assisted laser cladding technology. Optical microscopy (OM) and scanning electron microscopy (SEM) were used to study the microstructure of the composite coatings without vibration and at different vibration frequencies; the phase composition of the cladding layer was studied by X-ray diffraction (XRD); and an energy dispersive spectrometer (EDS) was used for elemental plane scanning analysis. The grain growth trend under different convection directions was simulated. The wear resistance and mechanical properties of the composite coating were analyzed by friction and wear testing machine, three-dimensional surface profiler, and microhardness tester. The vibration field generated by the self-improved shaking table device is used to assist laser cladding. The effect of mechanical vibration on the quality of the cladding layer was studied. The results show that compared with the coating without mechanical vibration, an appropriate increase in vibration frequency contributes to the refinement of the grains. The original coarse dendrite structure becomes a fine needle-like structure, and the fine grain size gradually decreases. The application of vibration can improve the effect of grain refinement. The vibration makes the grain size distribution more uniform and the microhardness fluctuation of the cladding layer decreases. The experimental results show that mechanical vibration can improve the microstructure uniformity of the coating by selecting suitable vibration parameters. The average friction coefficient and wear width are reduced, and the microhardness is also increased.

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Section: Wear Resistance and Hardness Of The Coatingmentioning

confidence: 84%

Effect of Mechanical Vibration on Microstructure and Properties of Laser Cladding WC-Reinforced Nickel-Based Alloy Coatings

Gao

Ren

et al. 2023

Coatings

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“…REEs also improved the distribution of Cr and C, reducing variation from the surface to the bottom. Gao et al [78] indicated weak mobility and diffusion of elements in the molten pool in Ni60 cladding layers without REEs, resulting in considerable aggregation and segregation. When the addition of La 2 O 3 reached 1.6 wt.%, the elemental distribution was most homogeneous.…”

Section: Distribution Of Substrate Elements In Microstructurementioning

confidence: 99%

Effects of Rare Earths on Microstructure and Wear Resistance in Metal Additive Manufacturing: A Review

Xiang,

Wang,

Zheng

et al. 2024

Coatings

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Rare earth elements (REEs) doping technology can effectively control the microstructure and improve the quality and performance of materials. This paper summarizes the research progress of REEs in metal additive manufacturing (MAM) in recent years and briefly introduces the effects of REEs on the molten pool fluidity, purified structure, and interfacial bonding between the molten cladding layer and substrate. It focuses on the mechanism of the role of REEs in the refinement and homogenization of microstructures, including grain growth, columnar to equiaxed transition (CET), and elemental segregation. The reasons for the influence of REEs on the homogenization of the structure and elemental segregation are analyzed. The effects of REE type, content, and dimension on hardness and wear resistance are investigated. Finally, tribological applications of REEs in biological and high-temperature environments are summarized, and the impact of REEs-modified alloys is summarized and prospected.

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Influence of rare earth oxides on microstructure and mechanical properties of nickel-based superalloys fabricated by high energy beam processing: A review

Bi,

Yan,

Zhang

et al. 2024

Journal of Rare Earths

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Effect of Rare-Earth La2O3 on Tribological Properties of Laser Cladding Nickel-Based Coatings on 35CrMoV Alloy Steel

Cited by 7 publications

References 29 publications

Effect of Mechanical Vibration on Microstructure and Properties of Laser Cladding WC-Reinforced Nickel-Based Alloy Coatings

Effect of Mechanical Vibration on Microstructure and Properties of Laser Cladding WC-Reinforced Nickel-Based Alloy Coatings

Effects of Rare Earths on Microstructure and Wear Resistance in Metal Additive Manufacturing: A Review

Influence of rare earth oxides on microstructure and mechanical properties of nickel-based superalloys fabricated by high energy beam processing: A review

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