Characterization of WC-doped NiCrBSi coatings deposited by Laser Cladding; effects of particle size and content of WC powder

Perrin, Thibaut; Achache, Sofiane; Méausoone, Pierre-Jean; Sanchette, Frédéric

doi:10.1016/j.surfcoat.2021.127703

Cited by 28 publications

(4 citation statements)

References 19 publications

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“…The microhardness of the MMC was enhanced by the uniform distribution of the WC particles within the NiCrBSiC solid solution with a further increase in the powder feeding rate. This is in accord with the Perrin et al [51] , Zhou et al [52] , and Elshaer [53] studies. The average MMC microhardness values were 844, 1000, and 1400 HV 0.1 , for powder feeding rates of 20, 40, and 60 g min À1 , respectively.…”

Section: Microhardness Estimationsupporting

confidence: 92%

Novel Surface Topography and Microhardness Characterization of Laser Clad Layer on TC4 Titanium Alloy Using Laser-Induced Breakdown Spectroscopy and Machine Learning

Al-Sayed

Samad²,

Mohamed³

et al. 2022

Metall Mater Trans A

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This study was performed to characterize surface topography and microhardness of 40 wt pct NiCrBSiC-60 wt pct WC hard coating on TC4 titanium after coaxial laser cladding via Laser Induced Breakdown Spectroscopy (LIBS) and machine learning. The high content of the hard WC particles is accomplished to enhance the abrasion wear resistance of such alloy. Various powder feeding rates were carried out during laser cladding process. The energy-dispersive X-ray analysis assured that W content in the metal matrix notably increased from 26.19 to 53.49 pct while the Ti content decreased from about 15.16 to 0.46 pct for the clad layer processed at 20 and 60 g min−1, respectively. The LIBS measurements successfully estimated such elements’ concentration as well as the clad layers' topography indicating that the effect of material matrix is a crucial challenge. Therefore, canonical correlation analysis and Belsley collinearity diagnostics were established to identify the essential emission lines from the whole spectra. Then, an optimized adaptive boosted random forest classifier was developed for microhardness investigation, with accuracy, sensitivity, and F1 score values of 0.9667. The results, confirmed by the metallurgical study, clarified that most of the titanium and tungsten emission lines have a significant impact on the surface topography as well as the microhardness values. The misclassification was attributed to the matrix effect such that the samples processed at 40 and 60 g min−1 were comparable in microstructure and chemical characterization unlike the one processed at 20 g min−1. Vickers microhardness of the metal matrix coating increased with the increase in the powder feeding rate, which is assured by the quantitative classification model. Graphical Abstract

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Section: Microhardness Estimationsupporting

confidence: 92%

Novel Surface Topography and Microhardness Characterization of Laser Clad Layer on TC4 Titanium Alloy Using Laser-Induced Breakdown Spectroscopy and Machine Learning

Al-Sayed

Samad²,

Mohamed³

et al. 2022

Metall Mater Trans A

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“…e most widely used material during laser cladding remanufacturing is iron-based alloy powder. Iron-based alloy powder has low cost, reliable performance, and wear and corrosion resistance, and meets the needs of laser cladding remanufacturing of key metal parts in mining machinery, engineering machinery, steel, and other industries [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Improvement of Microstructure and Properties of Q235 Steel by Iron-Based Laser Cladding Coating

Tang

et al. 2022

Advances in Materials Science and Engineering

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Laser cladding is a repair and surface-strengthening technology for the protection of metal parts. It is an effective method for improving the properties of various metal substrates. The process involves melting and solidifying alloy powder on the surface of the substrate. The aim of the present study was to explore the effect of iron-based alloy laser cladding coating on Q235 substrate. Three types of specimens were obtained from Q235 base material using a 5 kW cross-flow CO2 laser beam. Sample 1 and sample 2 were obtained by the addition of rosin to the iron-based alloy powder. Sample 3 was obtained through the addition of rosin and vanadium to the iron-based alloy powder. A gas curtain was used to wrap the molten pool of samples 2 and 3. The surface hardness of the specimens was determined using a Rockwell hardness tester, and the tensile strength was evaluated using the universal mechanical testing machine. The microstructure of the cladding coating was explored using an Olympus optical microscope and SEM. The results showed that the average hardness of sample 2 and sample 3 was 6.42% and 19.84% higher than that of sample 1. The average tensile strength of samples 2 and 3 was 7.42% and 10.37% higher than that of sample 1. The grain of sample 3 was finer than that of sample 2, and that of sample 2 was finer than that of sample 1 under the same magnification. Rosin minimized oxidation of the substrate, whereas the gas curtain prevented the entry of air into the molten pool, hence the improved properties of samples 2 and 3 compared with that of sample 1. Rosin and the gas curtain protected the powder from oxidation loss and improved the quality of the cladding coating. The results of the present study show that rosin reduced the oxidation of iron-based powder, whereas vanadium improved the hardness and strength of the substrate as well as refined the grain size.

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“…However, due to the high reflectivity of copper surface to laser, poor wettability between materials, complex interaction of parameters, and other factors [ 14 , 15 , 16 ], it is still challenging to achieve the dispersion distribution of the reinforced phase. In addition, for copper alloys, almost all of these strengthening approaches used to improve mechanical properties are based on the introduction of various kinds of defects that increase the scattering of conducting electrons at these defects, thus increasing the electrical resistivity of copper [ 17 ], and there is no optimal solution for the trade-off between the two [ 18 , 19 , 20 , 21 , 22 ]. MoSi 2 , classified as a metal silicide, boasts a range of notable benefits.…”

Section: Introductionmentioning

confidence: 99%

A Novel Superhard, Wear-Resistant, and Highly Conductive Cu-MoSi2 Coating Fabricated by High-Speed Laser Cladding Technique

Li,

Zhao,

Zhai

et al. 2023

Materials

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The pursuit of an advanced functional coating that simultaneously combines high hardness, wear resistance, and superior electrical conductivity has remained an elusive goal in the field of copper alloy surface enhancement. Traditional solid solution alloying methods often lead to a significant increase in electron scattering, resulting in a notable reduction in electrical conductivity, making it challenging to achieve a balance between high hardness, wear resistance, and high conductivity. The key lies in identifying a suitable microstructure where dislocation motion is effectively hindered while minimizing the scattering of conductive electrons. In this study, a novel Cu-MoSi2 coating was successfully fabricated on a CuCrZr alloy surface using the coaxial powder feeding high-speed laser cladding technique, with the addition of 10–30% MoSi2 particles. The coating significantly enhances the hardness and wear resistance of the copper substrate while maintaining favorable electrical conductivity. As the quantity of MoSi2 particles increases, the coating’s hardness and wear resistance gradually improve, with minimal variance in conductivity. Among the coatings, the Cu-30%MoSi2 coating stands out with the highest hardness (974.5 HV0.5) and the lowest wear amount (0.062 mg/km), approximately 15 times the hardness of the copper base material (65 HV0.5) and only 0.45% of the wear amount (13.71 mg/km). Additionally, the coating exhibits a resistivity of 0.173 × 10−6 Ω·m. The extraordinary hardness and wear resistance of these coatings can be attributed to the dispersion strengthening effect of MoxSiy particles, while the high electrical conductivity is due to the low silicon content dissolved into the copper from the released MoSi2 particles, as well as the rapid cooling rates associated with the high-speed laser cladding process.

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Characterization of WC-doped NiCrBSi coatings deposited by Laser Cladding; effects of particle size and content of WC powder

Cited by 28 publications

References 19 publications

Novel Surface Topography and Microhardness Characterization of Laser Clad Layer on TC4 Titanium Alloy Using Laser-Induced Breakdown Spectroscopy and Machine Learning

Novel Surface Topography and Microhardness Characterization of Laser Clad Layer on TC4 Titanium Alloy Using Laser-Induced Breakdown Spectroscopy and Machine Learning

Improvement of Microstructure and Properties of Q235 Steel by Iron-Based Laser Cladding Coating

A Novel Superhard, Wear-Resistant, and Highly Conductive Cu-MoSi2 Coating Fabricated by High-Speed Laser Cladding Technique

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