Crack propagation of a thin hard coating under cyclic loading: Irreversible cohesive zone model

Feng, Jiling; Qin, Yi; Liskiewicz, Tomasz; Beake, Ben D.; Wang, S.

doi:10.1016/j.surfcoat.2021.127776

Cited by 14 publications

(5 citation statements)

References 42 publications

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“…Feng and co-workers [139] performed a numerical study of the fatigue behaviour of a model coating system composed of (i) TiN coating, (ii) a case-hardened diffusion zone with graded mechanical properties and (iii) H11 steel substrate under cyclic loading by a R = 300 µm indenter. Crack initiation and propagation under cyclic loading was simulated with an irreversible cohesive zone model, which enabled local degradation of the material properties with the increasing cycles to be incorporated into the model by a damage variable.…”

Section: Modelling Nano-and Micro-impactmentioning

confidence: 99%

“…FIB cross-sections of impact tests stopped after different numbers of cycles would be able to show locations of initial impact damage and crack propagation in detail. Such analysis could be supplemented with the modelling of repetitive impact, e.g., by adapting the approach in [139] to micro-scale impact tests with smaller radii probes to improve our fundamental understanding of the interrelationships between coating microstructure and mechanical properties and impact wear resistance.…”

Section: Outlook/conclusionmentioning

confidence: 99%

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Nano- and Micro-Scale Impact Testing of Hard Coatings: A Review

Beake

2022

Coatings

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In this review, the operating principles of the nano-impact test technique are described, compared and contrasted to micro- and macro-scale impact tests. Impact fatigue mechanisms are discussed, and the impact behaviour of three different industrially relevant coating systems has been investigated in detail. The coating systems are (i) ultra-thin hard carbon films on silicon, (ii) DLC on hardened tool steel and (iii) nitrides on WC-Co. The influence of the mechanical properties of the substrate and the load-carrying capacity (H3/E2) of the coating, the use of the test to simulate erosion, studies modelling the nano- and micro-impact test and performing nano- and micro-impact tests at elevated temperature are also discussed.

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Section: Modelling Nano-and Micro-impactmentioning

confidence: 99%

Section: Outlook/conclusionmentioning

confidence: 99%

Nano- and Micro-Scale Impact Testing of Hard Coatings: A Review

Beake

2022

Coatings

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“…Cutting heat and friction energy during the cutting process accelerated the conversion of diamond into graphite [6,7]. In addition, residual stress, coating-substrate interface defects, and external stress on the diamond coating are the main reasons for the delamination of the diamond coating [8,9]. Therefore, how to improve the anti-graphitization and anti-coating peeling ability of diamond-coated tools has become the focus of research in recent years.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of WS2 and Micro-Textures to Inhibit Graphitization and Delamination of Micro-Nano Diamond-Coated Tools

Zhao

Xudong

et al. 2023

Crystals

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Diamond-coated tools often fail due to coating graphitization and delamination caused by poor coating adhesion, large contact stress, and thermochemical reactions. To address these issues, this research utilized a combination of micro-nano double-layer diamond coating, WS2 coating, and micro-textures. The WS2 coating inhibits the graphitization of the diamond coating through a transfer film mechanism, while the micro-textures and nanocrystalline diamond coating store WS2, resulting in a prolonged lubrication life. Additionally, the influence of micro-texture on coating-substrate residual stress and coating-substrate mechanical interlocking was discussed, and it was proved that proper micro-textures effectively improve the coating adhesion. Under the same cutting flux conditions, taking coating peeling as the judging standard, the cutting distance of textured WS2/Micro-Nano diamond coating tool is more than three times that of ordinary, diamond-coated tools, which greatly improves the service life of the tool.

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“…Laser cladding and similar procedures can be highly recommended, and can supplement or even replace some older technologies that are ecologically disadvantageous. Today, many recent scientific works are devoted to investigations into the behavior of metal layers [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Influence of the interphase between laser-cladded metal layer and steel substrate on fatigue propagation of a short edge crack

Malíková

Doubek

Miarka

et al. 2021

Frattura Ed Integrità Strutturale

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Laser cladding is a relatively new technology how to combine properties of various materials. Thus, bi-material interfaces are presented in real structures and can affect the fatigue crack propagation. A cracked bar subjected to pure tensile loading is numerically simulated in this work in order to analyze the effect of the interphase layer between the cladded metal layer and the steel substrate on crack growth in the surface layer. Particularly, the influence of various Young’s modulus of the interphase on the stable/unstable edge crack propagation is assessed. Moreover, the number of cycles necessary for achievement of the defined critical crack length is calculated and it is summarized that knowledge of elastic properties of the thin interphase is crucial for fracture and fatigue analyses.

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Crack propagation of a thin hard coating under cyclic loading: Irreversible cohesive zone model

Cited by 14 publications

References 42 publications

Nano- and Micro-Scale Impact Testing of Hard Coatings: A Review

Nano- and Micro-Scale Impact Testing of Hard Coatings: A Review

Synergistic Effect of WS2 and Micro-Textures to Inhibit Graphitization and Delamination of Micro-Nano Diamond-Coated Tools

Influence of the interphase between laser-cladded metal layer and steel substrate on fatigue propagation of a short edge crack

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