Effect of Cr content on microstructure and properties of Ni-Ti-xCr coatings by laser cladding

Han, Tengfei; Xiao, Meng; Zhang, Ying; Shen, Yuan

doi:10.1016/j.ijleo.2018.11.044

Cited by 21 publications

(8 citation statements)

References 21 publications

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“…Therefore, a fine crystal grain could be obtained with higher laser power while other parameters remain the same. In addition, according to the Hall-Petch relation, fine crystal grains will also contribute to increased cladding layer micro-hardness [ 22 ]. Increasing laser power could aid in grain refinement and nucleation, which decomposes more TiC and promotes the diffusion of fine grains.…”

Section: Resultsmentioning

confidence: 99%

“…The nickel percentage was much higher in the nickel-based structures area A and C. Titanium percentage was higher in the TiC dendrite structures area B and D. The iron percentage in the cladding layer at the 7 mm/s scanning speed was lower than at the 5 mm/s scanning speed. A higher percentage of iron will enhance solid solution strengthening, which improves the micro-hardness and wear resistance of the cladding layer [ 22 ]. Therefore, a faster scanning speed will lead to a lower wear resistance and a larger wear volume.…”

Section: Resultsmentioning

confidence: 99%

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Computational and Experimental Investigation of Micro-Hardness and Wear Resistance of Ni-Based Alloy and TiC Composite Coating Obtained by Laser Cladding

Lian

Zhang

et al. 2019

Materials

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The influence of processing parameters on the micro-hardness and wear resistance of a Ni-based alloy and titanium carbide (TiC) composite cladding layer was studied. Mathematical models were developed to predict the micro-hardness and wear resistance of the cladding layer by controlling the laser cladding processing parameters. Key processing parameters were the laser power, scanning speed, gas flow, and TiC powder ratio. The models were validated by analysis of variance and parameter optimization. Results show that the micro-hardness is positively correlated with laser power and TiC powder ratio, where the TiC powder ratio shows the most significant impact. The wear volume decreased with an increasing TiC powder ratio. The targets for the processing parameter optimization were set to 62 HRC for micro-hardness and a minimal volume wear. The difference between the model prediction value and experimental validation result for micro-hardness and wear volume were 1.87% and 6.33%, respectively. These models provide guidance to optimize the processing parameters to achieve a desired micro-hardness and maximize wear resistance in a composite cladding layer.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Computational and Experimental Investigation of Micro-Hardness and Wear Resistance of Ni-Based Alloy and TiC Composite Coating Obtained by Laser Cladding

Lian

Zhang

et al. 2019

Materials

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“…The coatings formed in the LC phase are smoother, denser, and less dilutive. 39 This technique controls the lack of temperature process, porosity, and the distortion of the workpiece to some degree compared to other techniques. It can be used for on-site repairing of the component due to the high flexibility of the process.…”

Section: Lc Processmentioning

confidence: 99%

State-of-the-art review on laser cladding process as an in-situ repair technique

Raj

Maity

Das

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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The present work reviews the laser cladding process as a repairing technique and the conventional repairing techniques and different heat source models. In this review work, the authors have tried to address the various traditional methods studied for repairing and surface modification. The dominantly used heat source model for numerical modelling of the repairing techniques and the mechanism of the laser cladding process, along with its advantages over the conventional repairing techniques, is also reviewed. This paper also focuses on the predominantly used laser of high power for the cladding process and the effect of process parameters on the quality of the clad layer. The different materials used as clad materials for repairing purposes during the laser cladding process have also been discussed briefly. In this paper, the authors have surveyed literature from different regions of the globe and considered the literature since 1969. This review discusses the various conventional repairing techniques used for repairing, heat source model, process parameters, and different materials used in the laser cladding process. The authors have also briefed the advantages, disadvantages, and application in each of the sections. The use of laser cladding for in-situ repairing process, development of a precise model, use of low-power laser, and application of laser cladding for actual engineering components was also considered in future research work.

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“…Laser cladding is a new surface modification technology that has been developed in recent years [4][5][6][7][8][9][10][11]. Compared with other technologies, the clad layer is well metallurgically bonded to the substrate, the high solidification rate (10 4 -10 6 K•s −1 ) in laser cladding promotes the formation of non-equilibrium phase, the microstructure of the prepared coating is uniform, fine and dense.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and properties of laser-clad FeNiCoCrTi_0.5Nb_0.5 high-entropy alloy coating

Zhang

Han

Xiao³

et al. 2020

Materials Science and Technology

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FeNiCoCrTi0.5Nb0.5 high-entropy alloy coating is prepared on AISI 1045 steel by laser cladding. The cross-sectional macroscopic morphology, phase, microstructure, microhardness and wear resistance are studied systematically. The results show that FeNiCoCrTi0.5Nb0.5 coating has no porosities, cracks or other defects and is well metallurgically bonded to the substrate. The coating is composed of body-centred cubic (BCC) solid solution, face-centred cubic (FCC) solid solution and hard Laves phase. The solid solution phase and Laves phase distribute uniformly and closely in a lamellar shape to form a fine and dense eutectic structure. The microhardness of FeNiCoCrTi0.5Nb0.5 coating is about three times that of the substrate. Compared with the substrate, the coating has superior wear resistance.

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Effect of Cr content on microstructure and properties of Ni-Ti-xCr coatings by laser cladding

Cited by 21 publications

References 21 publications

Computational and Experimental Investigation of Micro-Hardness and Wear Resistance of Ni-Based Alloy and TiC Composite Coating Obtained by Laser Cladding

Computational and Experimental Investigation of Micro-Hardness and Wear Resistance of Ni-Based Alloy and TiC Composite Coating Obtained by Laser Cladding

State-of-the-art review on laser cladding process as an in-situ repair technique

Microstructure and properties of laser-clad FeNiCoCrTi_0.5Nb_0.5 high-entropy alloy coating

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Effect of Cr content on microstructure and properties of Ni-Ti-xCr coatings by laser cladding

Cited by 21 publications

References 21 publications

Computational and Experimental Investigation of Micro-Hardness and Wear Resistance of Ni-Based Alloy and TiC Composite Coating Obtained by Laser Cladding

Computational and Experimental Investigation of Micro-Hardness and Wear Resistance of Ni-Based Alloy and TiC Composite Coating Obtained by Laser Cladding

State-of-the-art review on laser cladding process as an in-situ repair technique

Microstructure and properties of laser-clad FeNiCoCrTi0.5Nb0.5 high-entropy alloy coating

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Microstructure and properties of laser-clad FeNiCoCrTi_0.5Nb_0.5 high-entropy alloy coating