Tribological behavior of CrN-coated Cr-Mo-V steels used as die materials

G&#252;l&#351;ah Akta&#351; &#199;elik; &#350;eyda Polat; &#350;. Hakan Atapek

doi:10.1007/s12613-017-1532-0

Volume 24 Issue 12

Dec. 2017

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2017 > 24(12): 1394-1402

Gülşah Aktaş Çelik, Şeyda Polat, and Ş. Hakan Atapek, Tribological behavior of CrN-coated Cr-Mo-V steels used as die materials, Int. J. Miner. Metall. Mater., 24(2017), No. 12, pp. 1394-1402. https://doi.org/10.1007/s12613-017-1532-0

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Gülşah Aktaş Çelik, Şeyda Polat, and Ş. Hakan Atapek, Tribological behavior of CrN-coated Cr-Mo-V steels used as die materials, Int. J. Miner. Metall. Mater., 24(2017), No. 12, pp. 1394-1402. https://doi.org/10.1007/s12613-017-1532-0

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Research Article

Tribological behavior of CrN-coated Cr-Mo-V steels used as die materials

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Corresponding author:
Ş. Hakan Atapek E-mail: hatapek@gmail.com
Received: 13 January 2017; Revised: 28 July 2017; Accepted: 9 August 2017

Abstract

Abstract

DIN 1.2343 and 1.2367 steels are commonly used as die materials in aluminum extrusion, and single/duplex/multi-coatings enhance their surface properties. The design of an appropriate substrate/coating system is important for improving the tribological performance of these steels under service conditions because the load-carrying capacity of the system can be increased by decreasing the plastic deformation of the substrate. In this study, the tribological behavior of CrN-coated Cr-Mo-V steels (DIN 1.2343, 1.2367, and 1.2999 grades) was investigated using different setups and tribological pairs at room and elevated temperatures. The aim of this study was to reveal the wear resistance of a suggested system (1.2999/CrN) not yet studied and to understand both the wear and the failure characteristics of coated systems. The results showed that (i) among the steels studied, the DIN 1.2999 grade steel exhibited the lowest friction coefficient because it had the highest load-carrying capacity as a result of secondary hardening at elevated temperatures; (ii) at room temperature, both abrasive tracks and adhesive layers were observed on the worn surfaces; and (iii) a combination of chemical reactions and progressive oxidation caused aluminum adhesion on the worn surface, and the detachment of droplets and microcracking were the characteristic damage mechanisms at high temperatures.
- Cr-Mo-V steels;
- CrN coating;
- aluminum extrusion;
- tribological behavior

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