Wear Behavior of Surface Treated X45MoCrV5-3-1 Tool Steel at Room and Elevated Temperatures

Aktaş, Gülşah; Polat, Soner; Atapek, Ş. Hakan

doi:10.12693/aphyspola.127.1221

Cited by 2 publications

(2 citation statements)

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“…The hardening of the surface layer by PN with a sufficient material‐dependent hardening depth ensures a stronger supporting effect of the substrate material for the hard coating, while providing a smoother hardness gradient. In addition, PVD hard coatings greatly enhance the adhesive, abrasive and corrosive wear resistance of a material 2,9,10,14‐16 . Podgornik et al 17 report superior bonding of a hard coating to a nitrided substrate than to an untreated steel substrate.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionmentioning

confidence: 99%

“…In addition, PVD hard coatings greatly enhance the adhesive, abrasive and corrosive wear resistance of a material. 2,9,10,[14][15][16] Podgornik et al 17 report superior bonding of a hard coating to a nitrided substrate than to an untreated steel substrate.…”

Section: Introductionmentioning

confidence: 99%