Residual Stresses in Modelling Fatigue Lifetime of Gas Nitrided Iron-Based Alloys
Type
Articles dans des revues avec comité de lectureAuthor
WEIL, HadrienBARRALLIER, LaurentJEGOU, SébastienCOURLEUX, AliceBECK, GuillaumeAbstract
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 criteria are used and the present study focuses on the influence of residual stresses. Starting from a surface loading profile, the theoretical residual stress in-depth profile can be calculated aiming infinite fatigue lifetime. The model allows then optimization of the nitriding parameters.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
(2015)Le but de cette étude est de mettre en place un modèle de calcul en fatigue prenant en compte les caractéristiques mécaniques d’un matériau nitruré. Le travail est réalisé sur acier de nuance 32CrMoV13 utilisé dans la ...
-
(2016)The present study aims to develop an algorithm able to predict the fatigue lifetime of nitrided steels. Linear multi-axial fatigue criteria are used to take into account the gradients of mechanical properties provided by ...
-
Optimization of gaseous nitriding of carbon iron-based alloy based on fatigue resistance modelling (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 ...
-
(Elsevier, 2018)The 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 ...
-
(2014)The 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 ...