Microstructure and wear resistance of in-situ TiC reinforced AlCoCrFeNi-based coatings by laser cladding

Li, Yutao; Wang, Kaiming; Fu, Hanguang; Guo, Xingye; Lin, Jian

doi:10.1016/j.apsusc.2022.152703

Cited by 84 publications

(10 citation statements)

References 54 publications

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“…Thus, the wear resistance is reduced. [ 32 ] Second, because the hard phase generated inside the coating on the stainless‐steel is less precipitated, the matrix phase and eutectic phase are increased, so that the toughness of the coating is improved, but the strength is reduced, so that the wear resistance of the coating is reduced. The coating on 20# steel has better densification and smaller grains, so the wear resistance is optimal.…”

Section: Resultsmentioning

confidence: 99%

Effect of Substrate Material Properties on Microstructure and Mechanical Properties of Ni60 Coatings Prepared by Extreme High‐Speed Laser Cladding

Shen,

Chen,

et al. 2024

steel research int.

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Using extreme high‐speed laser cladding technology, Ni60 coatings are laser cladded onto stainless‐steel, 20# steel, and 45# steel substrates. The effect of substrate material properties on the cracking behavior, microstructure, and tribological properties of the Ni60 coating is systematically studied. The results show that as the difference of the coefficient of thermal expansion between the substrate and cladding material decreases, the tendency for crack generation in the cladding layer is reduced. In addition, the difference of the thermal physical properties of the substrate has an important effect on the temperature gradient during the cooling process of the coating, and then affects the growth rate of the grain in the coating and the overall mechanical properties of the coating. Finer grain size, fewer macroscopic coating cracks, and the evenly distributed hard phase in the Ni60 coating on the 20# steel substrate lead to better wear resistance.

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Section: Resultsmentioning

confidence: 99%

Effect of Substrate Material Properties on Microstructure and Mechanical Properties of Ni60 Coatings Prepared by Extreme High‐Speed Laser Cladding

Shen,

Chen,

et al. 2024

steel research int.

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“…For carburized gears, the hardness is an important mechanical property to the wear resistance and fatigue resistance. [28,29] In engineering, it is also common to determine the carburization level by hardness associated with the carbides. Figure 12 shows the relationship between the hardness of various carburized microstructures and shape factor φ sc .…”

Section: Comparison Of New Shape Factors φ Sc With Conventional Facto...mentioning

confidence: 99%

A Novel Classification Method for Carbide Grade by Using a New Shape Factor with Stress Distribution Analysis

Yao,

Cheng,

Fang

et al. 2024

steel research int.

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The carbide gradation related to geometry size and local stress concentration sensitivity significantly impacts the performance of the carburized 16Cr3NiWMoVNbE steel. The conventional metallurgical graphic comparison method by manual comparison is not capable of grading the carbide gradation automatically. A novel method is thus introduced to automatically evaluate the carbide grade by using a new shape factor φsc with stress distribution analysis instead of using the circularity or roundness shape factor which only considers the geometry shape of carbide particles. The logarithm of the stress concentration factor ln(K) is linearly related to the logarithm of the shape factor ln(φsc). The gradient b of the fitted straight line shows sensitivity to the carbide grade. The gradients are b1 = 0.039, b3 = 0.049, and b5 = 0.055 for the three carbide classes from low to high. Furthermore, there is also a linear relationship between hardness in different grades of carbide microstructure and the gradient b.

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“…After the addition of the ceramics, the hardness of the coating became significantly increased as compared with the original HEA coating. In a study by Li et al, [ 74 ] the hardness of the composite AlCoCrFeNi 1‐x TiC coating increased by 27%, 38%, and 77% with an increase in the ceramic TiC phase content ( x = 10%, 20%, and 30%, respectively), which was compared with the hardness of the original AlCoCrFeNi HEA coating. In contrast, Shang et al [ 66 ] prepared [CreFe 4 Co 4 Ni]Cr 3 − x TiC ( x = 0, 5, 7.5, 10, 12.5, or 15 vol%) composite coatings on a 904 stainless steel substrate, which were composed of a simple cubic FCC structure and a small extent of the TiC phase.…”

Section: Hea‐based Composite Coatingsmentioning

confidence: 99%

Wear‐Resistance of High‐Entropy Alloy Coatings and High‐Entropy Alloy‐Based Composite Coatings Prepared by the Laser Cladding Technology: A Review

Xie,

Tong,

Bai

et al. 2023

Adv Eng Mater

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With the continuous development of the aviation and aerospace industries, there is an increasing demand for surface coatings that can enhance the wear‐resistance and lubricity of substrates. High‐entropy alloy (HEA) coatings and high‐entropy alloy‐based composite coatings (including ceramic and lubricating phases) have attracted large attention, which is due to their excellent properties. They have, therefore, developed rapidly in the past decade. This article reviews the current status of research on the tribological properties of the HEA coatings and HEA‐based composite coatings that have been prepared by laser cladding technology. The focus is then on the wear‐resistance and wear‐reduction mechanism of the coatings. Furthermore, the review analyzes the influence of element addition, atomic ratio change, and process parameters on the coating organization and properties. The problems that have to be solved in the development of tribology‐based HEAs coatings, and the expected future development of HEA the coatings, are also discussed.

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Microstructure and wear resistance of in-situ TiC reinforced AlCoCrFeNi-based coatings by laser cladding

Cited by 84 publications

References 54 publications

Effect of Substrate Material Properties on Microstructure and Mechanical Properties of Ni60 Coatings Prepared by Extreme High‐Speed Laser Cladding

Effect of Substrate Material Properties on Microstructure and Mechanical Properties of Ni60 Coatings Prepared by Extreme High‐Speed Laser Cladding

A Novel Classification Method for Carbide Grade by Using a New Shape Factor with Stress Distribution Analysis

Wear‐Resistance of High‐Entropy Alloy Coatings and High‐Entropy Alloy‐Based Composite Coatings Prepared by the Laser Cladding Technology: A Review

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