Tribological behavior of duplex-coating on Vanadis 10 cold work tool steel

Zappelino, Bruna Freitas; Almeida, Elisangela Aparecida dos Santos de; Krelling, Anael Preman; Costa, César Edil da; Fontana, L.C.; Milan, Júlio César Giubilei

doi:10.1016/j.wear.2019.203133

Cited by 12 publications

(24 citation statements)

References 43 publications

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“…Moreover, Figure 6B also shows the evolution of hardness on surface for the annealed state of AISI‐O1 steel, which had a value of 220 HV, according to the literature 19 . For the as‐O1 sample, the value was measured in 655 HV, confirming the reference values 20 . The maximum values after the thermal treatment by tempering was 700 HV.…”

Section: Resultssupporting

confidence: 77%

“…19 For the as-O1 sample, the value was measured in 655 HV, confirming the reference values. 20 The maximum values after the thermal treatment by tempering was 700 HV. Figure 6A shows that, after plasma nitriding treatment, the microhardness of the surface increase 36% for the sample treated during 4 hours of plasma nitriding (890 HV) and 45% for the one treated during 5 hours (951 HV).…”

Section: Sem Image Analysismentioning

confidence: 96%

“…[8][9][10][11][12][13][14][15] Different studies have demonstrated that plasma nitriding at relatively low temperatures (below 450 • C) can allow obtaining a surface layer of nitrides due to diffusion of nitrogen during this process, which results in an increase of the hardness and wear resistance. [16][17][18][19] Zappelino et al, 20 presented a higher dry sliding wear resistance in samples of cold work tool steel Vanadis 10, with a cryogenic treatment samples followed by plasma nitriding. In addition, this process allows to reduce the treatment time, obtain minimal distortions, low gas consumption, energy and no harm to the environment when compared with other surface modification techniques.…”

Section: Introductionmentioning

confidence: 99%

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Effect of plasma nitriding time on the structural and mechanical properties of AISI‐O1 steel

Araújo

Ferreira

et al. 2020

Engineering Reports

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In this paper, the effect of plasma nitriding time on the improvement of surface microhardness of AISI O1 steel as a strategy to increase its wear resistance was addressed. The plasma nitriding was carried out in a controlled atmosphere (80% H 2(g) and 20% N 2(g)), temperature (500 • C), and pressure (6 mbar), during the different amount of time (4, 5, and 6 hours). The material was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and microhardness measurements. Moreover, microhardness measurements were carried out to investigate the mechanical properties. From the results, it was verified that the XRD patterns, SEM images, and EDS spectra confirmed the formation of a layer with ε-Fe 3 N and γ ′-Fe 4 N phases in all nitrided samples. The sample AISI-O1 steel, which was nitrided for 6 hours, exhibited a hardness about 46% higher than the one measured for the untreated sample. This sample also showed the thicker layer, with a mean of 7.22 μm. Therefore, this thermochemical treatment can improve mechanical properties in AISI O1 steel, and suggest its use in compression tools to improve this tools life.

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Section: Resultssupporting

confidence: 77%

Section: Sem Image Analysismentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Effect of plasma nitriding time on the structural and mechanical properties of AISI‐O1 steel

Araújo

Ferreira

et al. 2020

Engineering Reports

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“…However, nitrided layers do not provide sufficient resistance in highly aggressive environments or under heavy mechanical stresses. [2][3][4]6,7 PVD hard coatings are mainly used because of their high hardness and excellentThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.…”

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confidence: 99%

Sliding wear behavior of duplex coatings with different plasma nitride layers and a Cr‐Al‐Ti‐B‐N coating

Weinhold

Dalke

Schramm

et al. 2021

Engineering Reports

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The dry sliding wear behavior of AISI D2 tool steel is investigated under different heat treatment states in hardened, plasma nitrided, and duplex layer conditions. Plasma nitriding (PN) is performed at 510-520 • C with varying N 2 -H 2 gas mixtures, and Cr-Al-Ti-B-N layers are deposited at 480 • C by means of physical vapor deposition (PVD). This work investigates the influence of the nitride layer and, in particular, the presence of a compound layer on the tribological behavior of the duplex layer system. Therefore, as-nitrided conditions both without and with a compound layer -as well as with a mechanically removed compound layer -are subsequently hard coated. Comparative ball-on-disc wear tests in linear-reciprocating sliding motion against WC-Co counterbody balls are conducted at a load of 120 N. Compared to sample states without a compound layer, the as-nitrided states with a compound layer exhibit improved wear coefficients. In contrast, all duplex layer states exhibit comparably low friction coefficients and low wear coefficients independently of the presence of a compound layer.Removal of the compound layer prior to PVD coating leads to a significant reduction in wear resistance due to reduced surface roughness before the hard coating and the associated change in the bonding between the nitride layer and hard coating. K E Y W O R D Scompound layer, duplex surface engineering, friction and wear, plasma nitriding, PVD hard coating INTRODUCTIONTool steels are the preferred materials for most fields of application with demanding tribological working conditions -such as die casting, forging, stamping, cutting, and rolling. [1][2][3] One widely used representative of this group of steels is X155CrVMo12-1 (AISI D2), which is applied in complex applications involving, for example, high normal loads and sliding speeds. 4,5 In order to counteract the associated reduction in tool life, hard coatings produced by surface treatment techniques such as plasma nitriding (PN) and physical vapor deposition (PVD) hard coating are commonly applied. PN affords significant improvements in surface hardness, fatigue strength, corrosion, and wear resistance 3,4,6 compared to conventional steels. However, nitrided layers do not provide sufficient resistance in highly aggressive environments or under heavy mechanical stresses. [2][3][4]6,7 PVD hard coatings are mainly used because of their high hardness and excellentThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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“…Some researchers attempt to increase abrasion resistance by depositing different combinations of coatings [9,14,15] (also known as nano-layers [16]), including those with only slightly different chemical composition [17][18][19] or chemical-composition gradient [20,21]. The highest improvement of the double layered CrAlSiN + CrN/C coating was nearly three times more reliable than that of the tool coated with a single CrAlSiN layer [22].…”

Section: Introductionmentioning

confidence: 99%

Tribological Behaviour of K340 Steel PVD Coated with CrAlSiN Versus Popular Tool Steel Grades

Drozd¹,

Walczak²,

Szala³

et al. 2020

Preprint

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The tribological performance of metalwork steel tools is of vital importance in both cold and hot working processes. One solution for improving metal tool life is the application of coatings. This paper investigates the effect of CrAlSiN thin-film PVD-deposition on the tribological behaviour of tool steel K340. The sliding wear performance of the coated K340 steel is analysed in relation to both the uncoated K340 steel and a range of tool steels dedicated to hot- and cold-working, such as X155CrVMo12-1, X37CrMoV5-1, X40CrMoV5-1, 40CrMnMo7 and 90MnCrV8. The investigated tool steels were heat-treated, while K340 was subjected to thermochemical treatment and then coated with a CrAlSiN hard film (K340/CrAlSiN). The hardness, chemical composition, phase structure and microstructure of steels K340 and K340/CrAlSiN are examined. Tribological tests were conducted using the ball-on-disc tester in compliance with the ASTM G99 standard. The tests were performed under dry unidirectional sliding conditions, using an Al2O3 ball as a counterbody. The wear factor and coefficient of friction are estimated and analysed with respect to hardness and alloying composition of the materials under study. SEM observations are made to identify the sliding wear mechanisms of the analysed tool steels and PVD-coated K340 steel. In contrast to the harsh abrasive-adhesive wear mechanism observed for uncoated tool steels, the abrasive wear dominates in case of the AlCrSiN. The deposited thin film effectively prevents the K304 substrate from harsh wear severe degradation. Moreover, thanks to the deposited coating, the K304/CrAlSiN sample has a COF of 0.529 and a wear factor of K=5.68×10−7 m3 N−1 m−1, while the COF of the reference tool steels ranges from 0.702 to 0.885 and their wear factor ranges from 1.68×10−5 m3 N−1 m−1 to 3.67×10−5 m3 N−1 m−1. The CrAlSiN deposition reduces the wear of the K340 steel and improves its sliding properties, which makes it a promising method for prolonging the service life of metalwork tools.

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Tribological behavior of duplex-coating on Vanadis 10 cold work tool steel

Cited by 12 publications

References 43 publications

Effect of plasma nitriding time on the structural and mechanical properties of AISI‐O1 steel

Effect of plasma nitriding time on the structural and mechanical properties of AISI‐O1 steel

Sliding wear behavior of duplex coatings with different plasma nitride layers and a Cr‐Al‐Ti‐B‐N coating

Tribological Behaviour of K340 Steel PVD Coated with CrAlSiN Versus Popular Tool Steel Grades

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