Effect of physical vapor deposited bilayer (AlCrN + TiAlN) coating on high-speed steel single point cutting tool

Vannan, R. Ravi Raja Malar; Moorthy, T.V.; Hariharan, P.; Prabhu, P R

doi:10.1080/10426914.2016.1176178

Cited by 16 publications

(8 citation statements)

References 26 publications

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“…The control over these coatings properties makes them very versatile, moreover, they can be specifically made for a certain application, experiencing various combinations of coating's structures and compositions. Coatings are not only used on tools for metal cutting operations [35,36], their mechanical properties, high wear resistance, high temperature resistance and high corrosion resistance makes them very appealing for a wide range of applications. For example, they have seen some recent use in wood cutting processes [37], medical applications [38], mold industry [39], automotive (especially for brake pads) [40] and even being deposited in alloys used for nuclear fuel cladding [41,42].…”

Section: Introductionmentioning

confidence: 99%

Characteristics and Wear Mechanisms of TiAlN-Based Coatings for Machining Applications: A Comprehensive Review

Sousa

Silva

Pinto

et al. 2021

Metals

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The machining process is still a very relevant process in today’s industry, being used to produce high quality parts for multiple industry sectors. The machining processes are heavily researched, with the focus on the improvement of these processes. One of these process improvements was the creation and implementation of tool coatings in various machining operations. These coatings improved overall process productivity and tool-life, with new coatings being developed for various machining applications. TiAlN coatings are still very present in today’s industry, being used due to its incredible wear behavior at high machining speeds, high mechanical properties, having a high-thermal stability and high corrosion resistance even at high machining temperatures. Novel TiAlN-based coatings doped with Ru, Mo and Ta are currently under investigation, as they show tremendous potential in terms of mechanical properties and wear behavior improvement. With the improvement of deposition technology, recent research seems to focus primarily on the study of nanolayered and nanocomposite TiAlN-based coatings, as the thinner layers improve drastically these coating’s beneficial properties for machining applications. In this review, the recent developments of TiAlN-based coatings are going to be presented, analyzed and their mechanical properties and cutting behavior for the turning and milling processes are compared.

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Section: Introductionmentioning

confidence: 99%

Characteristics and Wear Mechanisms of TiAlN-Based Coatings for Machining Applications: A Comprehensive Review

Sousa

Silva

Pinto

et al. 2021

Metals

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“…Recently, increasing attention has been paid to nitride coatings with multilayer architecture due to their high mechanical and tribological characteristics [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. The multilayer architecture of the obtained coatings makes it possible to influence the structural-phase state of the layers by changing the modulation period of alternating layers, and, in addition, allows for combining their individual properties [ 15 , 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Bilayer Thickness and Bias Potential on the Structure and Properties of (TiZr/Nb)N Multilayer Coatings as a Result of Arc-PVD Deposition

et al. 2022

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This work is devoted to the study of the formation of nanostructured multilayer coatings (TiZr/Nb)N on the surface of an AISI 321 steel substrate depending on the deposition parameters of the Arc-PVD method. The results of the X-ray diffraction analysis showed the formation of solid solution (TiNb)N and ZrN in the multilayer coatings with an FCC structure, ε-NbN with a hexagonal structure, as well as with a small volume fraction of the ε-Ti2N and β-Nb2N phase. On the basis of phase composition data, it is possible to assume that an increase in the number of bilayers leads to a decrease in the nitrogen concentration in the bilayers and, consequently, to a decrease in the volume fraction of ε-NbN and β-Nb2N nitrides. In all investigated systems obtained at −100 V and −200 V bias potentials, ε-NbN is the main phase. The study of the element distribution over the thickness of the (TiZr/Nb)N coating confirms the results of the X-ray diffraction analysis. The use of the structure model in the form of alternating layers allows for significantly improving the adhesion characteristics of the protective coating, as well as ensuring their high hardness. Based on the experimental results, it is possible to analyze changes in the mechanical and tribological properties of multilayer coatings depending on the number of applied bilayers. The results of the study of the elastic modulus and hardness of multilayer coatings (TiZrNb)N with different numbers of bilayers showed that a large number of bilayers (small thickness of each individual layer) shows the lowest value of hardness. It is assumed that as the bilayer thickness decreases, the coating characteristics are closer to the monolayer alloy than to the multilayer structure.

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“…13 Beake et al carried out the experiment to study the wear performance of end milling using different physical vapor deposition (PVD) coatings, the result showed that tool life could be improved by about 100% when applying AlCrN-TiAlN bilayer, 14 the surface roughness and tool wear were less when compared to uncoated tool. 15 Comparative study was carried out by Murat and Qin et al, [16][17][18][19] the results show that the wear of TiAlN-coated tool was the smallest under the actual cutting conditions, but the friction coefficient was higher compared with TiN-coated tool. 20 Also, investigation to research the cause of tool wear was carried out, 21 and the results showed that the life of PVD TiAlN/TiN-coated tool was longer than that of FF-TiCN/FF-Al 2 O 3 coated tool, the wear mechanisms involved abrasive wear, adhesion, coating spalling, diffusion wear, and oxidation wear.…”

Section: Introductionmentioning

confidence: 99%

Experimental research on micro-cutting wear of 38CrSi steel caused by TiAlN- and TiCrAlN-coated tools

Hou

Shi

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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A comparative study was carried out on the wear of 38CrSi high-alloy steel using TiCrAlN- and TiAlN-coated tools. The presence of elemental Cr in the TiCrAlN coating resulted in formation of a Cr–O film on the tool, which provided a lower friction coefficient. This also mitigated transfer of cutting heat to the tool substrate and inhibited elemental diffusion between the tool and the workpiece. Simultaneously, the hard Cr–O film, which formed outside the Al–O film, provided excellent wear resistance and protected the Al–O film. Thus, elemental Cr played an active role in enhancing the wear resistance of the tool, prolonging its life. A workpiece cut using a TiCrAlN-coated tool had a surface roughness of 0.79 µm, which was about 62% lower than that obtained using a TiAlN-coated tool. Although wear of the TiCrAlN-coated tool was reduced, reaching 0.2 mm over the standard test time of 8 min, this time was 300% longer than that observed with the TiAlN-coated tool. Furthermore, the cutting force components were smaller, at up to 8 N, and the cutting force was 50% lower than with the TiAlN-coated tool. The wear and failure mechanisms of micro-milling 38CrSi alloy were the product of a combination of forms of wear and followed the wear law in terms of tool tip breakage, coating damage, abrasive wear, and adhesive wear; coating damage had the most important effect on tool life.

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Effect of physical vapor deposited bilayer (AlCrN + TiAlN) coating on high-speed steel single point cutting tool

Cited by 16 publications

References 26 publications

Characteristics and Wear Mechanisms of TiAlN-Based Coatings for Machining Applications: A Comprehensive Review

Characteristics and Wear Mechanisms of TiAlN-Based Coatings for Machining Applications: A Comprehensive Review

Effect of Bilayer Thickness and Bias Potential on the Structure and Properties of (TiZr/Nb)N Multilayer Coatings as a Result of Arc-PVD Deposition

Experimental research on micro-cutting wear of 38CrSi steel caused by TiAlN- and TiCrAlN-coated tools

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