Microstructure and Wear Resistance of Laser-Clad (Co, Ni)61.2B26.2Si7.8Ta4.8 Coatings

Zhang, Luan; Wang, Cunshan; Qian, Shengnan; Yu, Qun; Dong, C.

doi:10.3390/met7100419

Cited by 12 publications

(6 citation statements)

References 15 publications

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“…Because the laser cladding process has rapid heating and cooling rates, it can create a fine microstructure during the solidification process [12][13][14]. With the fast development of laser cladding technology, more and more attention has been paid to the repairing area and has been developed rapidly [15][16][17][18]. Lewis et al [19] used four different powders to improve the wear and rolling contact fatigue (RCF) life of rails by laser cladding.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cobalt on Microstructure and Wear Resistance of Ni-Based Alloy Coating Fabricated by Laser Cladding

Wang

Chang

Liu

et al. 2017

Metals

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Abstract:Ni-based alloy powders with different contents of cobalt (Co) have been deposited on a 42CrMo steel substrate surface using a fiber laser. The effects of Co content on the microstructure, composition, hardness, and wear properties of the claddings were studied by scanning electron microscopy (SEM), an electron probe microanalyzer (EPMA), X-ray diffraction (XRD), a hardness tester, and a wear tester. The results show that the phases in the cladding layers are mainly γ, M 7 (C, B) 3 , M 23 (C, B) 6 , and M 2 B. With the increase in Co content, the amounts of M 7 (C, B) 3 , M 23 (C, B) 6 , and M 2 B gradually decrease, and the width of the eutectic structure in the cladding layer also gradually decreases. The microhardness decreases but the wear resistance of the cladding layer gradually improves with the increase of Co content. The wear resistance of the NiCo30 cladding layer is 3.6 times that of the NiCo00 cladding layer. With the increase of Co content, the wear mechanism of the cladding layer is changed from abrasive wear to adhesive wear.

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Section: Introductionmentioning

confidence: 99%

Effect of Cobalt on Microstructure and Wear Resistance of Ni-Based Alloy Coating Fabricated by Laser Cladding

Wang

Chang

Liu

et al. 2017

Metals

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“…Measuring the microhardness of a worn material at a certain distance from the surface is a commonly used technique to demonstrate the gradient of microhardness of the friction surface in-depth [ 12 , 13 , 35 , 36 , 37 , 38 , 39 ]. The only drawback of this technique is that it is hard to measure the microhardness of the surface itself.…”

Section: Resultsmentioning

confidence: 99%

Abrasive Wear of High-Carbon Low-Alloyed Austenite Steel: Microhardness, Microstructure and X-ray Characteristics of Worn Surface

et al. 2021

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A high-carbon, high-silicon steel (1.21 wt% C, 2.56 wt% Mn, 1.59 wt% Si) was subjected to quenching from 900 and 1000 °C, resulting in microstructures containing 60 and 94% of retained austenite, respectively. Subsequent abrasive wear tests of quenched samples were performed using two-body abrasion and three-body abrasion testing machines. Investigations on worn surface and subsurface were carried out using SEM, XRD, and microhardness measurement. It was found that the highest microhardness of worn surface (about 1400 HV0.05) was achieved on samples quenched from 900 °C after three-body abrasion. Microhardness of samples after two-body abrasion was noticeably smaller. with a maximum of about 1200 HV0.05. This difference correlates with microstructure investigations along with XRD results. Three-body abrasion has produced a significantly deeper deformed layer; corresponding diffractograms show bigger values of the full width at half maximum parameter (FWHM) for both α and γ alone standing peaks. The obtained results are discussed in the light of possible differences in abrasive wear conditions and differing stability of retained austenite after quenching from different temperatures. It is shown that a structure of metastable austenite may be used as a detector for wear conditions, as the sensitivity of such austenite to phase transformation strongly depends on wear conditions, and even small changes in the latter lead to significant differences in the properties of the worn surface.

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“…Therefore, promoting the abrasion resistance of materials in high temperature environments is an important challenge in the field of tribology [5,6]. In comparison with the conventional surface modification process, laser cladding exhibits the benefit of higher energy density and lower dilution rate, which enables effective refinement of the tissue and improvement of coating elemental segregation [7][8][9]. Nickel-based powder has favorable corrosion resistance and wettability, and the Cr elements in the melt pool will react with C and B elements to produce Cr 7 C 3 , Cr 23 C 6 , CrB and other phases during the preparation of the coating by laser cladding, which are capable of raising the microhardness and wear resistance of the coating [10,11].…”

Section: Introductionmentioning

confidence: 99%

Improvement of the High Temperature Wear Resistance of Laser Cladding Nickel-Based Coating: A Review

Yingpeng

Wang

2023

Metals

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Nickel-based coatings obtained by laser melting are broadly applied for surface modification owing to their high bond strength and exceptional wear resistance. Nickel-based laser cladding coatings are also extensively employed in high temperature wear environments. In this paper, the research progress on improving the high temperature wear resistance of laser cladding nickel-based composite coatings was reviewed by introducing a hard ceramic phase, adding solid lubricants and rare earth elements. On this basis, the material system to enhance the high temperature wear resistance of coating was summarized from the perspectives of the type, addition amount, morphology and distribution law of the hard ceramic phase, etc. The synergistic effect of various lubricants on improving the high temperature wear resistance of coating was discussed, and the action mechanism of solid lubricants in the high temperature extreme environment was analyzed. Finally, this paper summarizes the main difficulties involved in increasing the high temperature wear resistance of nickel-based coatings and some problems worthy of attention in the future development.

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Microstructure and Wear Resistance of Laser-Clad (Co, Ni)61.2B26.2Si7.8Ta4.8 Coatings

Cited by 12 publications

References 15 publications

Effect of Cobalt on Microstructure and Wear Resistance of Ni-Based Alloy Coating Fabricated by Laser Cladding

Effect of Cobalt on Microstructure and Wear Resistance of Ni-Based Alloy Coating Fabricated by Laser Cladding

Abrasive Wear of High-Carbon Low-Alloyed Austenite Steel: Microhardness, Microstructure and X-ray Characteristics of Worn Surface

Improvement of the High Temperature Wear Resistance of Laser Cladding Nickel-Based Coating: A Review

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