Enhancing mechanism of TC4 high-cycle fatigue performance by the introduction of hard nitride mono-and multilayer coatings

Zhang, Zhaolu; Chai, Yan; Yang, Minglei; He, Guangyu

doi:10.1016/j.ijfatigue.2024.108219

International Journal of Fatigue

2024

DOI: 10.1016/j.ijfatigue.2024.108219

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Enhancing mechanism of TC4 high-cycle fatigue performance by the introduction of hard nitride mono-and multilayer coatings

Zhaolu Zhang,

Yan Chai,

Minglei Yang

et al.

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Cited by 3 publications

References 49 publications

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Fracture mechanism of metallic film with nano to sub-micron thickness on polycrystalline substrate

Li,

Zhang,

et al. 2024

Scripta Materialia

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Fracture mechanism of metallic film with nano to sub-micron thickness on polycrystalline substrate

Li,

Zhang,

et al. 2024

Scripta Materialia

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High-temperature fretting wear behavior and microstructure stability of a laser-cladding Ti-Al-C-N composite coating meditated by variable cycle conditions

Sun,

Wang,

Cao

et al. 2025

Tribology International

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Enhancing erosion resistance of ceramic/metal multilayer coating by crack inhibition design

Zhang,

Ren,

et al. 2024

Journal of Vacuum Science &Amp; Technology A

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Erosive damage of nitride coatings is predominantly attributed to coating delamination caused by crack initiation, propagation, and coalescence. For brittle nitride coating materials, inhibiting the crack initiation and propagation within the coating may enhance their erosion resistance. This paper focuses on TiAlN/TiAl multilayer coatings, and by increasing the thickness of the metallic sublayers, the initiation and propagation of cracks in ceramic/metal multilayer coatings are significantly suppressed. As the metallic sublayer thickness increases from 1 to 4 μm, the TiAlN/TiAl coating erosion rate decreases from 0.032 to 0.002 mg⋅g−1, resulting in an improvement in the erosion resistance of over ten times. Based on the failure mechanism of ceramic/metal multilayer coatings under sand erosion conditions and finite element analysis, there are two reasons for improving the erosion resistance of ceramic/metal multilayer coatings by increasing the toughness of the metal layer. On one hand, increasing the thickness of the ductile metal layer can effectively reduce the maximum tensile stress value on the coating surface and decrease the equivalent plastic deformation of the ductile metal layer, thereby improving the crack initiation suppression ability of the coating. On the other hand, increasing the TiAl layer thickness effectively suppresses the downward propagation of longitudinal cracks and the coalescence of transverse cracks in nitride coatings. This research proposes a new approach for enhancing the erosion resistance of nitride coatings.

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Enhancing mechanism of TC4 high-cycle fatigue performance by the introduction of hard nitride mono-and multilayer coatings

Cited by 3 publications

References 49 publications

Fracture mechanism of metallic film with nano to sub-micron thickness on polycrystalline substrate

Fracture mechanism of metallic film with nano to sub-micron thickness on polycrystalline substrate

High-temperature fretting wear behavior and microstructure stability of a laser-cladding Ti-Al-C-N composite coating meditated by variable cycle conditions

Enhancing erosion resistance of ceramic/metal multilayer coating by crack inhibition design

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