Optimization of gaseous nitriding of steels by multi-physics modelling
Communication avec acte
Date
2016Résumé
Gaseous nitriding is controlled by temperature, time and surface nitrogen potential. Tuning these parameters lead to the expected mechanical properties (hardness, residual stresses) and durability of treated mechanical parts. In this paper, a methodology is proposed to optimize nitriding parameters by using a multi-physics modelling of the nitriding treatment (microstructure, diffusion/precipitation mechanisms, hardness and residual stress generation). This model is particularly suited to the diffusion layer and does not apply to the compound layer. The scope concerns low-alloyed carbon steels and gaseous nitriding. The role of carbon is established and taken into account in the proposed methodology.
Fichier(s) constituant cette publication
- Nom:
- IFHTSE2016_BarJeg_v07 - final ...
- Taille:
- 1.990Mo
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- Proceeding
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Documents liés
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Article dans une revue avec comité de lectureThe gaseous nitriding behaviour of 33CrMoV12-9 steel was investigated. The co-diffusion of nitrogen and carbon, precipitation at grain boundaries and mechanical properties evolutions (microhardness, residual stresses) are ...
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Article dans une revue avec comité de lectureThe evolution of residual stresses during short time gas nitriding of 33CrMoV12-9 steel grade is studied. It aims understanding the influence of nitriding parameters (temperature T and nitriding potential Kn) on the ...
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Article dans une revue avec comité de lectureLa nitruration gazeuse est un traitement thermochimique contrôlée par la température, le temps et le potentiel azote superficiel qui influencent de façon notable les propriétés méca- niques (dureté, contraintes résiduelles) ...
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Article dans une revue avec comité de lectureWEIL, Hadrien; COURLEUX, Alice; BECK, Guillaume; BARRALLIER, Laurent; JÉGOU, Sébastien (Materials Research Forum LLC, 2016)The objective of this work is to propose a model abled to optimize the mechanical properties from gaseous nitriding of steels (hardness, residual stresses) for a given loading and fatigue lifetime. Multiaxial fatigue ...
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Optimization of gaseous nitriding of carbon iron-based alloy based on fatigue resistance modelling Article dans une revue avec comité de lectureWEIL, Hadrien; CALDEIRA-MEULNOTTE, Nancy; BECK, Guillaume; BARRALLIER, Laurent; JÉGOU, Sébastien (Elsevier, 2018)Gaseous nitriding of steels is a well-established thermochemical surface treat- ments that increases the fatigue resistance of treated parts. The present work proposes a modelling of the fatigue life as a function of the ...