Fracture and wear mechanisms of FeMnCrNiCo + x(TiC) composite high-entropy alloy cladding layers

Cai, Yangchuan; Zhu, Lisong; Cui, Yan; Shan, Mengdie; Li, Huijun; Yi, Xiaosu; Han, Jian

doi:10.1016/j.apsusc.2020.148794

Cited by 91 publications

(28 citation statements)

References 31 publications

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“…The high wear resistance of two-layer coatings can be explained as follows. The nitride-carbide coating has a higher bond strength and chemical inertness than a singlelayer carbide coating of transition elements [47,48]. A decrease in friction coefficient between the counterbody and the coating is due to the coating and oxide films' composition during friction.…”

Section: Discussionmentioning

confidence: 99%

Estimation of Wear Resistance for Multilayer Coatings Obtained by Nitrogenchroming

Pavlenko

Zajac

Kharchenko

et al. 2021

Metals

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This article deals with improving the wear resistance of multilayer coatings as a fundamental problem in metal surface treatment, strengthening elements of cutting tools, and ensuring the reliability of machine parts. It aims to evaluate the wear depth for multilayer coatings by the mass loss distribution in layers. The article’s primary purpose is to develop a mathematical method for assessing the value of wear for multilayer steel-based coatings. The study material is a multilayer coating applied to steel DIN C80W1. The research was performed using up-to-date laboratory equipment. Nitrogenchroming has been realized under overpressure in two successive stages: nitriding for 36 h at temperature 540 °C and chromizing during 4 h at temperature 1050 °C. The complex analysis included several options: X-ray phase analysis, local micro-X-ray spectral analysis, durometric analysis, and determination of wear resistance. These analyses showed that after nitrogenchroming, the three-layer protective coating from Cr23C6, Cr7C3, and Cr2N was formed on the steel surface. Spectral analysis indicated that the maximum amount of chromium 92.2% is in the first layer from Cr23C6. The maximum amount of carbon 8.9% characterizes the layer from Cr7C3. Nitrogen is concentrated mainly in the Cr2N layer, and its maximum amount is 9.4%. Additionally, it was determined that the minimum wear is typical for steel DIN C80W1 after nitrogenchroming. The weight loss of steel samples by 25 mg was obtained. This value differs by 3.6% from the results evaluated analytically using the developed mathematical model of wear of multilayer coatings after complex metallization of steel DIN C80W1. As a result, the impact of the loading mode on the wear intensity of steel was established. As the loading time increases, the friction coefficient of the coated samples decreases. Among the studied samples, plates from steel DIN C80W1 have the lowest friction coefficient after nitrogenchroming. Additionally, a linear dependence of the mass losses on the wearing time was obtained for carbide and nitride coatings. Finally, an increase in loading time leads to an increase in the wear intensity of steels after nitrogenchroming. The achieved scientific results are applicable in developing methods of chemical-thermal treatment, improving the wear resistance of multilayer coatings, and strengthening highly loaded machine parts and cutting tools.

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Section: Discussionmentioning

confidence: 99%

Estimation of Wear Resistance for Multilayer Coatings Obtained by Nitrogenchroming

Pavlenko

Zajac

Kharchenko

et al. 2021

Metals

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“…Guo et al [178] also observed that the inclusion of Cr 3 C 2 greatly improved the wear performance of single-phase CoCrFeMnNi HEA. Cai et al [179] investigated the pinning effect of TiC particles on the strengthening of CoCrFeMnNi HEAs, which resulted in grain boundaries and grain size refinement and reduction from 76 um to 26 um for a 15% TiC-CoCrFeMnNi Composite. The use of TiC improves hardness from 213 HV to 288 HV.…”

Section: Tribological Characteristicsmentioning

confidence: 99%

A critical review on mechanically alloyed high entropy alloys: processing challenges and properties

Kumar

Singh

Suhane

2022

Mater. Res. Express

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High entropy alloys (HEAs) earned the attention of the scientific community since their discovery in the year 2004, while the progress in this field has been realized since the year 2010 when a drastic increase in demand for HEAs was observed due to their unique characteristics and ability to form several compositions. As universally acknowledged, the immense potential in compositions, microstructures, and properties has sparked a great interest in this field. Researchers primarily focused on equiatomic HEAs, but the paradigm eventually shifted to non-equiatomic alloys. As the research progressed, four core effects were identified as the most important aspects in enabling the distinct characteristics. Mechanical alloying (MA), followed by the sintering approach, has piqued the interest of all researchers focusing on HEA processing. Accordingly, the main objective of this review is to critically discuss mechanically alloyed HEAs in the view of mechanical properties, tribological behavior, and functional properties. Furthermore, the predominant challenges and their conceivable prospects are also deliberated that offer novelty to this review article.

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“…The furrows came from the micro-cutting by the tribo-pair, as shown in Figure 14(a). Therefore, the wear mechanism was abrasive wear [36]. the worn track on the NiMo-5%TiC coating.…”

Section: Wear Mechanismsmentioning

confidence: 99%

Microstructure, tribological performances, and wear mechanisms of laser-cladded TiC-reinforced NiMo coatings under grease-lubrication condition

Zhu

Dejun

2021

Materials Science-Poland

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NiMo-5%TiC, NiMo-15%TiC, and NiMo-25%TiC coatings were prepared on GCr15 steel by laser cladding (LC). The microstructure and the phases of the obtained coatings were analyzed using ultra-depth-of-field microscopy (UDFM) and X-ray diffraction (XRD), respectively. A ball-on-disk wear test was used to analyze the friction-wear performance of the substrate and the NiMo-TiC coatings under grease-lubrication condition. The results show that the grain shape of NiMo-TiC coatings is dendritic. The wear resistance of NiMo-TiC coatings is improved by the addition of TiC, and the depths of the worn tracks on the substrate and on the NiMo-5%TiC, NiMo-15%TiC, and NiMo-25%TiC coatings are 4.183 μm, 2.164 μm, 1.882 μm, and 1.246 μm, respectively, and the corresponding wear rates are 72.25 μm3/s/N, 32.00 μm3/s/N, 18.10 μm3/s/N, and 7.99 μm3/s/N, respectively; this shows that the NiMo-25%TiC coating has the highest wear resistance among the three kinds of coatings. The wear mechanism of NiMo-TiC coatings is abrasive wear, and the addition of TiC plays a role in resisting wear during the friction process.

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Fracture and wear mechanisms of FeMnCrNiCo + x(TiC) composite high-entropy alloy cladding layers

Cited by 91 publications

References 31 publications

Estimation of Wear Resistance for Multilayer Coatings Obtained by Nitrogenchroming

Estimation of Wear Resistance for Multilayer Coatings Obtained by Nitrogenchroming

A critical review on mechanically alloyed high entropy alloys: processing challenges and properties

Microstructure, tribological performances, and wear mechanisms of laser-cladded TiC-reinforced NiMo coatings under grease-lubrication condition

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