Tribology and Materials | Volume 1 | Issue 2 | 2022 | 81-86
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https://doi.org/10.46793/tribomat.2022.006
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Investigation of the penetration of the counter-body in the nitride zone of steels and analysis of concomitant characteristics
Angel Zyumbilev1, Nikolay Tonchev
2,
Emil Yankov
3,
Iliya Zyumbilev1, Valentin Gaydarov2
1 Technical University of
Sofia, Plovdiv Branch, Plovdiv, Bulgaria
2 University of Transport, Sofia, Bulgaria
3 University of Ruse “Angel Kanchev”, Ruse, Bulgaria
Abstract: The present research summarises the influence of
technological modes based on experimental studies of steels BH11 and
BH21 (BS 4659) for hot work in ion nitriding. The peculiarity is that
one or several precisely defined modes are not fixed, but a group of
parameters from the action of the considered technology in a planned
experiment is studied. As a result, the technological modes of
ion-nitrided steels are determined, corresponding to the minimal and
maximal penetration of the counter-body in the nitrided layer. The
obtained results are based on additional research related to
microhardness and relative wear resistance. In this way a finished idea
of the tribological properties of ion nitrided steels with a specialised
purpose is obtained. The tools by which the problem is solved are design
of experiments (DOE), modelling and single-criteria optimisation of
controlled quantities. The main contribution of the paper is a
formalised determination of the influence of the technological
parameters of ionic nitriding on the phase composition of the nitrided
zone and respectively on the wear resistance of the surface layer.
Keywords:
ion nitriding, phase composition, wear, DOE, optimisation, modelling of
properties.
Received: 21-02-2022, Revised: 10-04-2022, Accepted: 14-04-2022
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 University of Transport, Sofia, Bulgaria
3 University of Ruse “Angel Kanchev”, Ruse, Bulgaria
Abstract: The present research summarises the influence of technological modes based on experimental studies of steels BH11 and BH21 (BS 4659) for hot work in ion nitriding. The peculiarity is that one or several precisely defined modes are not fixed, but a group of parameters from the action of the considered technology in a planned experiment is studied. As a result, the technological modes of ion-nitrided steels are determined, corresponding to the minimal and maximal penetration of the counter-body in the nitrided layer. The obtained results are based on additional research related to microhardness and relative wear resistance. In this way a finished idea of the tribological properties of ion nitrided steels with a specialised purpose is obtained. The tools by which the problem is solved are design of experiments (DOE), modelling and single-criteria optimisation of controlled quantities. The main contribution of the paper is a formalised determination of the influence of the technological parameters of ionic nitriding on the phase composition of the nitrided zone and respectively on the wear resistance of the surface layer.
Keywords: ion nitriding, phase composition, wear, DOE, optimisation, modelling of properties.
Received: 21-02-2022, Revised: 10-04-2022, Accepted: 14-04-2022
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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.