Mechanical behavior and abrasive mechanism mapping applied to micro-scratch tests on homogeneous and heterogeneous materials: FEM and experimental analyses

Seriacopi, Vanessa; Prados, Erika Fernanda; Fukumasu, Newton Kiyoshi; Souza, R.M.; Machado, Izabel Fernanda

doi:10.1016/j.wear.2020.203240

Cited by 9 publications

(5 citation statements)

References 45 publications

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“…It should be noted that the model is assumed homogeneous with bulk material properties. Hence, the effect of material heterogeneity which has been shown [48,49] to cause divergence between numerical and experimental results for low loads is not considered.…”

Section: Effects Of Individual Constitutive Materials Parameters On S...mentioning

confidence: 99%

Stress state characterization of ductile materials during scratch abrasion

Rajaraman

Keim

Pondicherry

et al. 2021

Wear

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Section: Effects Of Individual Constitutive Materials Parameters On S...mentioning

confidence: 99%

Stress state characterization of ductile materials during scratch abrasion

Rajaraman

Keim

Pondicherry

et al. 2021

Wear

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“…However, in their research F n and F t were unknown [58]. In the same way, Seriacopi et al performed an FE simulation of a scratch test, and the comparison with the experimental data showed deviations of the F t /F n ratio and scratch depths up to 39.2% and 9.5%, respectively [59].…”

Section: Scratch Test: Experimental and Fe Simulationmentioning

confidence: 96%

3D finite element simulation of scratch testing to quantify experimental failure mechanisms of a thin film

Pérez-Higareda,

Jirón-Lazos,

Montiel-González

et al. 2023

Modelling Simul. Mater. Sci. Eng.

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In this work, an exhaustive finite element (FE) simulation was developed to closely reproduce experimental parameters such as normal force, tangential force, and penetration depth along the whole scratch test. We used an 800 nm thick Ti–Al–N thin film deposited by sputtering as the reference sample to carry out scratch tests identifying the appearance of failure mechanisms at different longitudinal displacements and critical loads. The hardening models of thin film and substrate allowed us to quantify the maximum principal stresses responsible for thin film spallation, about 14.5 GPa for the tensile mode and −1.49 GPa for the compression mode. These parameters provided an improved perspective to characterize the failure mechanisms on the sample during the scratching. The present enhanced 3D FE simulation can be a crucial tool for designing film-substrate systems with more precise mechanical strength calculations.

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“…A detailed examination of Figures 7 and 8 indicated that mixed damage modes occurred, related to the brittleness and roughness of the modified surface and ductility and porosity of the sintered substrate. These features may influence the stylus contact area during the scratch tests of the material and, hence, the type of surface damage [81,82]. For the scratch test at 100 mN, almost no cracks were observed, while for the higher applied loads, cracks propagated in a perpendicular direction to the scratching movement.…”

Section: Scratch Characterizationmentioning

confidence: 99%

Scratch Response of Hollow Cathode Radiofrequency Plasma-Nitrided and Sintered 316L Austenitic Stainless Steel

Broch,

Fontoura,

Lima

et al. 2024

Coatings

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Low-temperature plasma nitriding is a thermochemical surface treatment that promotes surface hardening and wear resistance enhancement without compromising the corrosion resistance of sintered austenitic stainless steels. Hollow cathode radiofrequency (RF) plasma nitriding was conducted to evaluate the influence of the working pressure and nitriding time on the microstructure and thickness of the nitrided layers. A group of samples of sintered 316L austenitic stainless steel were plasma-nitrided at 400 °C for 4 h, varying the working pressure from 160 to 25 Pa, and the other group was treated at the same temperature, varying the nitriding time (2 h and 4 h) while keeping the pressure at 25 Pa. A higher pressure resulted in a thinner, non-homogeneous nitrided layer with an edge effect. Regardless of the nitriding duration, the lowest pressure (25 Pa) promoted the formation of a homogenously nitrided layer composed of nitrogen-expanded austenite that was free of iron or chromium nitride and harder and more scratching-wear-resistant than the soft steel substrate.

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Mechanical behavior and abrasive mechanism mapping applied to micro-scratch tests on homogeneous and heterogeneous materials: FEM and experimental analyses

Cited by 9 publications

References 45 publications

Stress state characterization of ductile materials during scratch abrasion

Stress state characterization of ductile materials during scratch abrasion

3D finite element simulation of scratch testing to quantify experimental failure mechanisms of a thin film

Scratch Response of Hollow Cathode Radiofrequency Plasma-Nitrided and Sintered 316L Austenitic Stainless Steel

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