Effect of PVD film's residual stresses on their mechanical properties, brittleness, adhesion and cutting performance of coated tools

Skordaris, G.; Bouzakis, K.‐D.; Kotsanis, T.; Charalampous, Paschalis; Bouzakis, E.; Breidenstein, Bernd; Bergmann, Benjamin

doi:10.1016/j.cirpj.2016.11.003

Cited by 74 publications

(35 citation statements)

References 21 publications

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“…A high wear coefficient with a high standard deviation can be observed in the TiAlN/HT system. This statement is in agreement with Sokardis et al and Ahlgren et al who have established the presence of a point of critical compressive residual stresses, at which point the coating presents a detriment of the tribological performance [13,60]. On the other hand, CrAlN/substrate systems have presented significantly lower wear coefficients when compared with TiAlN/substrate compounds and consequently to the substrates without overlay processes ( Figure 11).…”

Section: Resultssupporting

confidence: 90%

“…Finally, the highest critical load was found at the TiAlN/HT system. Similar results were found by Huang et al, where the adhesion of TiAlN coatings increases with the reduction of the substrate roughness [42] and by Skordaris et al where TiAlN coatings with values between −2000 and −3000 MPa have exhibited a higher adhesion strength to the substrate [13]. For the TiAlN on the heat treated substrate, the scratch failure mode shows a reduced plastic deformation of the substrate and the coating, without causing delamination of the coating at the edges of the track (Figure 9).…”

Section: Resultssupporting

confidence: 87%

“…According to Oettel et al, high compressive residual stresses favour the delamination of the coatings [59]. Skordaris et al have mentioned the existence of a range where compressive residual stresses are beneficial for the cohesion and adhesion of the material to the substrate; and Ahlgren et al have also evidenced the presence of a critical compressive residual stresses value were TiAlN starts presenting high delamination [13,60]. Thus, the lower limit can be categorised as the approximate −1000 MPa reached in the TiAlN/HT + Nitr.…”

Section: Resultsmentioning

confidence: 99%

“…Nevertheless, those results are dependent on the substrate material and properties, the deposition method, the obtained chemical composition, the material of the tribo-partner element and the tribological test parameters [7,8,10,11]. Most of the investigations of TiAlN and CrAlN coatings are performed using cermets [12][13][14][15], Ti alloys [16][17][18], high speed steels [19][20][21] or stainless steels [22] as substrate material. Although the hot work tool steel AISI H11 is widely used in the metal forming industry, only a few studies have investigated the relation between the AISI H11 properties and their direct influence on the performance of the PVD coatings, and much less in ternary transition metal nitrides as TiAlN and CrAlN.…”

Section: Introductionmentioning

confidence: 99%

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Tribomechanical Behaviour of TiAlN and CrAlN Coatings Deposited onto AISI H11 with Different Pre-Treatments

et al. 2019

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In the metalworking industry, different processes and applications require the utilisation of custom designed tools. The selection of the appropriated substrate material and its pre-treatment as well as the protective coating are of great importance in the performance and life time of forming tools, dies, punches and coated parts in general. TiAlN and CrAlN coatings have been deposited onto the hot work tool steel AISI H11 by means of Direct Current Magnetron Sputtering. Prior to the deposition, the steel substrate was modified by the implementation of three different pre-treatments: nitriding of the annealed substrate [Nitr.], heat treatment of the steel (quenching and double tempering) [HT] and nitridation subsequent to a heat treatment of the substrate [HT + Nitr.]. The purpose of this research is to obtain valuable information on the microstructural properties and tribomechanical behaviour of two of the most promising ternary transition metal nitride coatings, TiAlN and CrAlN, when deposited on the AISI H11 steel with different initial properties. The different pre-treatments performed to the steel prior to the deposition favour the tailoring during the design and construction of tools for specific applications. The microstructure, the adhesion and the wear resistance of TiAlN coatings were highly influenced by the substrate preparation. Contrarily, CrAlN results were more independent of the substrate preparation and no high influences were found. For instance, the adhesion of the TiAlN coating varied from 17 to 43 N for the coating deposited onto the HT + Nitr. substrate and the HT substrate respectively, while the lowest and highest adhesion of the CrAlN coating varied between 42 and 53 N for the HT and the HT + Nitr. respectively. Likewise, the wear coefficient of the CrAlN were ten times smaller than those found for the TiAlN coatings, presumably due to the presence of hex-AlN phases and the small differences on the Young´s Modulus of the substrate and the CrAlN coatings.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Tribomechanical Behaviour of TiAlN and CrAlN Coatings Deposited onto AISI H11 with Different Pre-Treatments

et al. 2019

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“…The influence of the coating thickness on the load-displacement curve for the instrumented indentation of ceramic coatings on the metal substrate is studied in [6][7][8]. The role of the surface roughness of ceramic coating in the mechanical behavior of the system "coatingsubstrate" in instrumented indentation is numerically studied in [9][10][11][12]. Both instrumented indentation and scratch tests of the hardening coating are simulated in [13][14][15][16][17], where the authors analyze stress fields in the contact region as well as the peculiarities of the loadingdisplacement curves.…”

Section: Introductionmentioning

confidence: 99%

Multilevel Numerical Model of Hip Joint Accounting for Friction in the Hip Resurfacing Endoprosthesis

Eremina

Smolin

2019

FU Mech Eng

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Friction between the moving parts of the endoprosthesis has a significant impact on the endoprosthesis operation time. Primarily, it concerns the endoprosthesis of hip and knee joints. To improve the tribological characteristics of the metal endoprosthesis, hardening nanostructured coatings are used. Usually, titanium and titanium alloys are used as metal, and titanium nitride is used as a coating. Herein, we propose an approach to multilevel modeling of the system “bone-endoprosthesis” which is based on the movable cellular automaton method and accounts for friction between the moving parts of the hip resurfacing endoprosthesis. We validated the models of the friction system materials using the instrumented scratch test simulation. Then, we simulated friction at the mesolevel, explicitly considering roughness of the coating. The results obtained at the mesolevel were used as tribological characteristics of the coating in the macroscopic model of the hip resurfacing endoprosthesis.

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A Tool for Studying the Mechanical Behavior of the Bone–Endoprosthesis System Based on Multi-scale Simulation

Smolin

Eremina

Shilko

2020

Springer Tracts in Mechanical Engineering

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The chapter presents recent advances in developing numerical models for multiscale simulation of the femur–endoprosthesis system for the case of hip resurfacing arthroplasty. The models are based on the movable cellular automaton method, which is a representative of the discrete element approach in solid mechanics and allows correctly simulating mechanical behavior of a variety of elastoplastic materials including fracture and mass mixing. At the lowest scale, the model describes sliding friction between two rough surfaces of TiN coatings, which correspond to different parts of the friction pair of hip resurfacing endoprosthesis. At this scale, such parameters of the contacting surfaces as the thickness, roughness, and mechanical properties are considered explicitly. The next scale of the model corresponds to a resurfacing cap for the femur head rotating in the artificial acetabulum insert. Here, sliding friction is explicitly computed based on the effective coefficient of friction obtained at the previous scale. At the macroscale, the proximal part of the femur with a resurfacing cap is simulated at different loads. The bone is considered as a composite consisting of outer cortical and inner cancellous tissues, which are simulated within two approaches: the first implies their linear elastic behavior, the second considers these tissues as Boit’s poroelastic bodies. The later allows revealing the role of the interstitial biological fluid in the mechanical behavior of the bone. Based on the analysis of the obtained results, the plan for future works is proposed.

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Effect of PVD film's residual stresses on their mechanical properties, brittleness, adhesion and cutting performance of coated tools

Cited by 74 publications

References 21 publications

Tribomechanical Behaviour of TiAlN and CrAlN Coatings Deposited onto AISI H11 with Different Pre-Treatments

Tribomechanical Behaviour of TiAlN and CrAlN Coatings Deposited onto AISI H11 with Different Pre-Treatments

Multilevel Numerical Model of Hip Joint Accounting for Friction in the Hip Resurfacing Endoprosthesis

A Tool for Studying the Mechanical Behavior of the Bone–Endoprosthesis System Based on Multi-scale Simulation

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