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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Kubler, Regis
Laboratoire de Mécanique et Procédés de Fabrication
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Topics
Publications (7/7 displayed)
- 2021Prediction of residual stress fields after shot-peening of TRIP780 steel with second-order and artificial neural network models based on multi-impact finite element simulationscitations
- 2011Residual stress development during nitriding of steelscitations
- 2011Evolution of residual stress in the diffusion zone of a model Fe-Cr-C alloy during nitridingcitations
- 2010Phase transformations and induced volume changes in a nitrided ternary Fe–3%Cr–0.345%C alloycitations
- 2010On Residual Stresses Development During Nitriding of Steel: Thermochemical and Time Dependencecitations
- 2009Phase transormations involving residual stresses during gaseous nitriding of steel
- 2008Phase transormations involving residual stresses during gaseous nitriding of steel
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document
Phase transormations involving residual stresses during gaseous nitriding of steel
Abstract
Nitriding of steels is an important treatment in duplex hardening methods. This treatment is known in the art but some advances still need to be done in terms of residual stress understanding. Although residual stresses originate from volume micro-loading accompanying the precipitation of nitrides, questions about their in-depth distribution of a nitrided layer during the treatment are still a challenge. A chemico-thermo-micromechanical model has been developed on the volume change computation of secondary phase transformation. Supported by some experimental observations (TEM, X-ray analysis, Electron Probe Micro Analysis (EPMA), ...), this model gives some better understanding about nitriding. Residual stresses are mainly due to the precipitation of semi-coherent MN nitrides (M=Cr,V,Mo,. . . ). Moreover carbon, often not enough considered in the literature, is shown to be of importance in the process as it involves a second type of precipitation that is the transformation of carbides M23C6 and M7C3 into incoherent nitrides. The definition of the volume change of this transformation is a critical entry data of the mechanical modelling.