High temperature phase stability and wear behavior of laser clad Ta reinforced NiCrBSi coating

Yu, Tao; Chen, Jie; Wen, Yimeng; Deng, Qilin

doi:10.1016/j.apsusc.2021.149171

Cited by 46 publications

(16 citation statements)

References 34 publications

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“…LC process was conducted using a continuous-wave diode laser system, where the coating powder was transported through its coaxially equipped powder feeding system using high-purity carrier Ar gas. The laser fabrication parameters were power = 1100 W, scanning speed = 3 mm/s, powder feeding speed = 10 g/min, and overlap = 50%, selected based on findings of previous studies [18][19][20] and a series of preliminary experiments.…”

Section: Coatings Preparationmentioning

confidence: 99%

Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO₂ composite coatings in chloride-enriched environments

Chen

Wang

2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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Q235 steel is a low-cost material widely applied in modern industrial constructions. However, electrochemical degradation is the main drawback for its applications in chloride-enriched environments. To address this problem, NiCrAlMo and NiCrAlMo + 2 wt% nano-CeO2 composite coatings were laser-cladded on Q235 steel substrates. Characterization methods were used to investigate the microstructures, corrosion behaviors, and electrochemical mechanisms of the obtained coatings. The results showed that adding nano-CeO2 is conductive for removing residual gas pores and for refinement of grains, effectively improving the passive and electrochemical properties of the NiCrAlMo coating in both chloride-enriched solutions. Furthermore, the NiCrAlMoCeO2 composite coating exhibits a significantly reduced icorr of 0.4919 µA cm2 and an increased resistance ( Rp) of 175,310 Ω cm2 in a neutral solution, demonstrating the good anti-corrosion properties for its application in marine engineering structures.

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Section: Coatings Preparationmentioning

confidence: 99%

Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO₂ composite coatings in chloride-enriched environments

Chen

Wang

2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…And some secondary dendrite arms were observed parallel to each other. According to the XRD result (Figure 4) and a previous study [30], it could be determined that the dendrite is Ni solid solution and the matrix was Cu. The microstructure of the track interface (dotted box 2) is shown in Figure 5c.…”

Section: Microstructures Of the Compositesmentioning

confidence: 76%

“…For example, TiB and TiC was synthesized in a liquid Ti melt pool successively via the direct laser deposition of a mixture of Ti and B 4 C, and they acted as the heterogeneous nucleation sites for the Ti matrix, which promoted the formation of fine equiaxed α-Ti grains [29]. In the process of depositing Ta-reinforced NiCrBSi coating on the surface of 35 CrMo steel substrate, a variety of reinforcement phases (TaC, Ni 3 Fe, CrB, M 23 C 6 and Cr 2.8 Fe 1.2 B 4 ) were synthesized in the molten pool, which significantly improved the high temperature wear resistance of the coating [30]. During the laser sintering of Cu-4.1Zr-1.1B powder, ZrB 2 and CuZr were synthesized in the Cu matrix, which improved the high temperature hardness of Cu composites [31].…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution and Mechanical Properties of Needle-like ZrB2 Reinforced Cu Composites Manufactured by Laser Direct Energy Deposition

Zhan

Cao

2022

Micromachines

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Laser additive manufacturing is an advanced material preparation technology, which has been widely used to prepare various materials, such as polymers, metals, ceramics and composites. Zirconium diboride (ZrB2) reinforced copper composite material was fabricated using laser direct energy deposition technology. The microstructure and phase composition of the composite material were analyzed, and the influence of laser energy density on the microstructure and mechanical properties of composite materials was discussed. The results showed that the needle-like ZrB2 ceramic reinforcement was successfully synthesized via an in-situ synthesis reaction. The composites were mainly composed of needle-like ZrB2, Ni dendrites and a Cu matrix. The morphological changes of Ni dendrites could be observed at the interface inside the composite material: cellular crystals → large-sized columnar dendrites → small-sized dendrites (along the solidification direction). The continuous Ni dendritic network connected the ZrB2 reinforcements together, which significantly improved the mechanical properties of the composite material. At a laser energy density of 0.20 kJ/mm2, the average microhardness of the composite material reached 294 HV0.2 and the highest tensile strength was 535 MPa. With the laser energy density increased to 0.27 kJ/mm2, the hardness and tensile strength decreased and the elongation of the Cu composites increased due to an increase in the size of the ZrB2 and a decrease in the continuity of the Ni dendritic.

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“…However, the deformation of oxide layer and steel was inevitably inconsistent owing to the difference in elastic modulus. [ 53 ] Under the condition of large plastic deformation, cracks can be generated at the interface between the steel and oxide layer, thus resulting in spalling of the oxide layer and then losing its protective effect. As the wear test proceeded, the fresh steel exposed by the spalling of the oxide layer will react quickly with oxygen and then another oxide layer was formed.…”

Section: Resultsmentioning

confidence: 99%

Improved High‐Temperature Softening Resistance and Wear Resistance of AISI M42 High‐Speed Steel by N‐Alloying

Jiao

Feng

et al. 2023

steel research int.

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Herein, a novel high‐nitrogen (0.18 wt%) M42 high‐speed steel is fabricated by pressurized metallurgy. The high‐temperature softening resistance of N‐free and 0.18N steels is evaluated by hardness measurement at room temperature after additional heating at 600 °C for various times, and the high‐temperature wear resistance is evaluated by ball‐on‐disk dry sliding wear test at 600 °C. The microstructure is characterized by scanning electron microscopy (SEM), X‐ray diffraction (XRD), and high‐resolution transmission electron microscope (HRTEM). The results indicate that the hardness of 0.18N steel is 2–3 HRC higher than that of N‐free steel after additional heating at 600 °C for 4–120 h. The superior high‐temperature softening resistance of 0.18N steel is primarily ascribed to the smaller coarsening rate of M2C secondary carbides. Under the dry sliding condition at 600 °C, the wear rate of N‐free steel is approximately 1.5 times higher than that of 0.18N steel. The better high‐temperature wear resistance of 0.18N steel is primarily because the superior softening resistance makes it maintain higher hardness during the wear process to provide stronger support for the oxide layer and increase the protective ability of oxide layer to steel.

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High temperature phase stability and wear behavior of laser clad Ta reinforced NiCrBSi coating

Cited by 46 publications

References 34 publications

Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO₂ composite coatings in chloride-enriched environments

Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO₂ composite coatings in chloride-enriched environments

Microstructure Evolution and Mechanical Properties of Needle-like ZrB2 Reinforced Cu Composites Manufactured by Laser Direct Energy Deposition

Improved High‐Temperature Softening Resistance and Wear Resistance of AISI M42 High‐Speed Steel by N‐Alloying

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High temperature phase stability and wear behavior of laser clad Ta reinforced NiCrBSi coating

Cited by 46 publications

References 34 publications

Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO2 composite coatings in chloride-enriched environments

Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO2 composite coatings in chloride-enriched environments

Microstructure Evolution and Mechanical Properties of Needle-like ZrB2 Reinforced Cu Composites Manufactured by Laser Direct Energy Deposition

Improved High‐Temperature Softening Resistance and Wear Resistance of AISI M42 High‐Speed Steel by N‐Alloying

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Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO₂ composite coatings in chloride-enriched environments

Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO₂ composite coatings in chloride-enriched environments