Tribology and Materials | Volume 3 | Issue 3 | 2024 | 131-140
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https://doi.org/10.46793/tribomat.2024.015
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Friction and wear behaviour of AlCrN and TiN coated H13 tool steel
Ben Samuel Johny
1,
Mathew Alphonse
2
1 C.S.I Institute of Technology, Thovalai, India
2 Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Chennai, India
Abstract: The wear characteristics of coated H13 tool steel and
as-casted H13 tool steel in dry sliding conditions were investigated
through a pin-on-disc tribometer, where the H13 steel is used as a pin
and EN31 steel is used as disc material. The study was focused on
evaluating the tribological behaviour by examining the friction
characteristics, surface morphology and wear performance. Initially, to
improve the hardness of the untreated (as-casted) H13 steel, the
tempering process where carried out on the samples, which helped elevate
the hardness from 38 to 55 HRC. The worn surface of the samples was
analysed using atomic force microscopy (AFM). Among the four samples
(as-casted, heat-treated, AlCrN coated and TiN coated) the as-casted
samples were affected by oxidation and adhesive wear. The material loss
measured for as-casted, heat-treated, AlCrN and TiN samples was 30.34,
7.85, 0.78 and 0.14 mg, respectively. The measured coefficient of
friction was 0.541 for as-casted, 0.492 for the heat-treated, 0.48 for
the AlCrN and 0.147 for the TiN sample. From the study, the major
conclusion was that the TiN coating offers major wear protection and
lower friction.
Keywords: H13 tool steel, pin-on-disc, TiN, AlCrN, SEM, AFM.
Received: 03-08-2024, Revised: 23-09-2024, Accepted: 29-09-2024
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license, which allows users to distribute, remix, adapt,
and build upon the material in any medium or format for non-commercial purposes only, and only so long as attribution is given to the creator.
2 Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Chennai, India
Abstract: The wear characteristics of coated H13 tool steel and as-casted H13 tool steel in dry sliding conditions were investigated through a pin-on-disc tribometer, where the H13 steel is used as a pin and EN31 steel is used as disc material. The study was focused on evaluating the tribological behaviour by examining the friction characteristics, surface morphology and wear performance. Initially, to improve the hardness of the untreated (as-casted) H13 steel, the tempering process where carried out on the samples, which helped elevate the hardness from 38 to 55 HRC. The worn surface of the samples was analysed using atomic force microscopy (AFM). Among the four samples (as-casted, heat-treated, AlCrN coated and TiN coated) the as-casted samples were affected by oxidation and adhesive wear. The material loss measured for as-casted, heat-treated, AlCrN and TiN samples was 30.34, 7.85, 0.78 and 0.14 mg, respectively. The measured coefficient of friction was 0.541 for as-casted, 0.492 for the heat-treated, 0.48 for the AlCrN and 0.147 for the TiN sample. From the study, the major conclusion was that the TiN coating offers major wear protection and lower friction.
Keywords: H13 tool steel, pin-on-disc, TiN, AlCrN, SEM, AFM.
Received: 03-08-2024, Revised: 23-09-2024, Accepted: 29-09-2024
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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license, which allows users to distribute, remix, adapt, and build upon the material in any medium or format for non-commercial purposes only, and only so long as attribution is given to the creator.