Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 Steel

Mohamed Ali Terres; Rafik Bechouel; Salem Ben Mohamed

doi:doi:10.11648/j.ijmsa.20170601.13

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Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 Steel

Mohamed Ali Terres, Rafik Bechouel, Salem Ben Mohamed

Published in International Journal of Materials Science and Applications (Volume 6, Issue 1)

Received: 12 August 2016 Accepted: 25 August 2016 Published: 4 January 2017

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Abstract

Steel 42CrMo4, used in the manufacturing of transmission systems (gears), poses problems in service under specific cyclic stress conditions of the operating mode of its bodies. The treatment of ion nitriding during 20 hours with 520°C applied to 42CrMo4 steel in an untreated state (quenched and tempered) led to the formation of a compound layer (mixture of nitrides ' and carbonitrides  with irregular thickness evaluated at 5µm and a diffusion layer of depth equal to 295µm). In the diffusion layer, the presence of inserted nitrogen leads to the increase in hardness (3 times that of basic material) and to the creation of a compressive residual stress field (-400MPa). This superficial hardening does not modify the tensile mechanical characteristics of 42CrMo4 steel but renders it more sensitive to overload in fatigue. As a result, a 0.7% total deformation imposed corresponding to a loading level of 850MPa, constitutes the limit of gain in fatigue obtained by the ion nitriding considered.

Published in	International Journal of Materials Science and Applications (Volume 6, Issue 1)
DOI	10.11648/j.ijmsa.20170601.13
Page(s)	18-27
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

42CrMo4 Steel, Nitriding, Work-Hardening, Residual Stress, Low Cycle Fatigue

References

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APA Style

Mohamed Ali Terres, Rafik Bechouel, Salem Ben Mohamed. (2017). Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 Steel. International Journal of Materials Science and Applications, 6(1), 18-27. https://doi.org/10.11648/j.ijmsa.20170601.13

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ACS Style

Mohamed Ali Terres; Rafik Bechouel; Salem Ben Mohamed. Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 Steel. Int. J. Mater. Sci. Appl. 2017, 6(1), 18-27. doi: 10.11648/j.ijmsa.20170601.13

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AMA Style

Mohamed Ali Terres, Rafik Bechouel, Salem Ben Mohamed. Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 Steel. Int J Mater Sci Appl. 2017;6(1):18-27. doi: 10.11648/j.ijmsa.20170601.13

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@article{10.11648/j.ijmsa.20170601.13,
  author = {Mohamed Ali Terres and Rafik Bechouel and Salem Ben Mohamed},
  title = {Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 Steel},
  journal = {International Journal of Materials Science and Applications},
  volume = {6},
  number = {1},
  pages = {18-27},
  doi = {10.11648/j.ijmsa.20170601.13},
  url = {https://doi.org/10.11648/j.ijmsa.20170601.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20170601.13},
  abstract = {Steel 42CrMo4, used in the manufacturing of transmission systems (gears), poses problems in service under specific cyclic stress conditions of the operating mode of its bodies. The treatment of ion nitriding during 20 hours with 520°C applied to 42CrMo4 steel in an untreated state (quenched and tempered) led to the formation of a compound layer (mixture of nitrides ' and carbonitrides  with irregular thickness evaluated at 5µm and a diffusion layer of depth equal to 295µm). In the diffusion layer, the presence of inserted nitrogen leads to the increase in hardness (3 times that of basic material) and to the creation of a compressive residual stress field (-400MPa). This superficial hardening does not modify the tensile mechanical characteristics of 42CrMo4 steel but renders it more sensitive to overload in fatigue. As a result, a 0.7% total deformation imposed corresponding to a loading level of 850MPa, constitutes the limit of gain in fatigue obtained by the ion nitriding considered.},
 year = {2017}
}

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TY  - JOUR
T1  - Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 Steel
AU  - Mohamed Ali Terres
AU  - Rafik Bechouel
AU  - Salem Ben Mohamed
Y1  - 2017/01/04
PY  - 2017
N1  - https://doi.org/10.11648/j.ijmsa.20170601.13
DO  - 10.11648/j.ijmsa.20170601.13
T2  - International Journal of Materials Science and Applications
JF  - International Journal of Materials Science and Applications
JO  - International Journal of Materials Science and Applications
SP  - 18
EP  - 27
PB  - Science Publishing Group
SN  - 2327-2643
UR  - https://doi.org/10.11648/j.ijmsa.20170601.13
AB  - Steel 42CrMo4, used in the manufacturing of transmission systems (gears), poses problems in service under specific cyclic stress conditions of the operating mode of its bodies. The treatment of ion nitriding during 20 hours with 520°C applied to 42CrMo4 steel in an untreated state (quenched and tempered) led to the formation of a compound layer (mixture of nitrides ' and carbonitrides  with irregular thickness evaluated at 5µm and a diffusion layer of depth equal to 295µm). In the diffusion layer, the presence of inserted nitrogen leads to the increase in hardness (3 times that of basic material) and to the creation of a compressive residual stress field (-400MPa). This superficial hardening does not modify the tensile mechanical characteristics of 42CrMo4 steel but renders it more sensitive to overload in fatigue. As a result, a 0.7% total deformation imposed corresponding to a loading level of 850MPa, constitutes the limit of gain in fatigue obtained by the ion nitriding considered.
VL  - 6
IS  - 1
ER  -

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Author Information

Mohamed Ali Terres

Laboratory Mechanics, Materials and Processes (LMMP) ENSIT, University of Tunis, Tunis, Tunisia
Rafik Bechouel

Laboratory Mechanics, Materials and Processes (LMMP) ENSIT, University of Tunis, Tunis, Tunisia
Salem Ben Mohamed

Laboratory Mechanics, Materials and Processes (LMMP) ENSIT, University of Tunis, Tunis, Tunisia

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Plain Text BibTeX RIS

APA Style

Mohamed Ali Terres, Rafik Bechouel, Salem Ben Mohamed. (2017). Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 Steel. International Journal of Materials Science and Applications, 6(1), 18-27. https://doi.org/10.11648/j.ijmsa.20170601.13

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ACS Style

Mohamed Ali Terres; Rafik Bechouel; Salem Ben Mohamed. Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 Steel. Int. J. Mater. Sci. Appl. 2017, 6(1), 18-27. doi: 10.11648/j.ijmsa.20170601.13

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AMA Style

Mohamed Ali Terres, Rafik Bechouel, Salem Ben Mohamed. Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 Steel. Int J Mater Sci Appl. 2017;6(1):18-27. doi: 10.11648/j.ijmsa.20170601.13

Copy | Download

@article{10.11648/j.ijmsa.20170601.13,
  author = {Mohamed Ali Terres and Rafik Bechouel and Salem Ben Mohamed},
  title = {Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 Steel},
  journal = {International Journal of Materials Science and Applications},
  volume = {6},
  number = {1},
  pages = {18-27},
  doi = {10.11648/j.ijmsa.20170601.13},
  url = {https://doi.org/10.11648/j.ijmsa.20170601.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20170601.13},
  abstract = {Steel 42CrMo4, used in the manufacturing of transmission systems (gears), poses problems in service under specific cyclic stress conditions of the operating mode of its bodies. The treatment of ion nitriding during 20 hours with 520°C applied to 42CrMo4 steel in an untreated state (quenched and tempered) led to the formation of a compound layer (mixture of nitrides ' and carbonitrides  with irregular thickness evaluated at 5µm and a diffusion layer of depth equal to 295µm). In the diffusion layer, the presence of inserted nitrogen leads to the increase in hardness (3 times that of basic material) and to the creation of a compressive residual stress field (-400MPa). This superficial hardening does not modify the tensile mechanical characteristics of 42CrMo4 steel but renders it more sensitive to overload in fatigue. As a result, a 0.7% total deformation imposed corresponding to a loading level of 850MPa, constitutes the limit of gain in fatigue obtained by the ion nitriding considered.},
 year = {2017}
}

Copy | Download

TY  - JOUR
T1  - Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 Steel
AU  - Mohamed Ali Terres
AU  - Rafik Bechouel
AU  - Salem Ben Mohamed
Y1  - 2017/01/04
PY  - 2017
N1  - https://doi.org/10.11648/j.ijmsa.20170601.13
DO  - 10.11648/j.ijmsa.20170601.13
T2  - International Journal of Materials Science and Applications
JF  - International Journal of Materials Science and Applications
JO  - International Journal of Materials Science and Applications
SP  - 18
EP  - 27
PB  - Science Publishing Group
SN  - 2327-2643
UR  - https://doi.org/10.11648/j.ijmsa.20170601.13
AB  - Steel 42CrMo4, used in the manufacturing of transmission systems (gears), poses problems in service under specific cyclic stress conditions of the operating mode of its bodies. The treatment of ion nitriding during 20 hours with 520°C applied to 42CrMo4 steel in an untreated state (quenched and tempered) led to the formation of a compound layer (mixture of nitrides ' and carbonitrides  with irregular thickness evaluated at 5µm and a diffusion layer of depth equal to 295µm). In the diffusion layer, the presence of inserted nitrogen leads to the increase in hardness (3 times that of basic material) and to the creation of a compressive residual stress field (-400MPa). This superficial hardening does not modify the tensile mechanical characteristics of 42CrMo4 steel but renders it more sensitive to overload in fatigue. As a result, a 0.7% total deformation imposed corresponding to a loading level of 850MPa, constitutes the limit of gain in fatigue obtained by the ion nitriding considered.
VL  - 6
IS  - 1
ER  -

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