Competition between surface and subsurface rolling contact fatigue failures of nitrided parts: A Dang Van approach

E. Bossy (1) , J.P. Noyel , X. Kleber (2) , F. Ville (3) , C. Sidoroff , S. Thibault (4)

1 Physique des ondes pour la médecine
2 MATEIS - Matériaux, ingénierie et science [Villeurbanne]
3 LaMCoS - Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne]
4 Safran Tech

Mechanical contacts in rolling element bearings and gears are increasingly loaded nowadays. In high temperature applications, surface treatments such as gas-nitriding are used to increase their rolling contact fatigue life. This study focuses on the prediction of the location of crack initiation for gas-nitrided steels subjected to rolling contact fatigue taking into account the material property gradients induced by the nitriding process. Several approaches based on the Dang Van criterion are compared to experimental data to find the most reliable prediction model. © 2019 Elsevier Ltd

Mots clés: Aluminum nitride; Fatigue of materials; Finite element method; Friction; High temperature applications; Nitriding; Thermal fatigue; Damage; Mechanical contact; Mesoscopics; Nitriding process; Prediction model; Rolling contact fatigue; Rolling contact fatigue life; Rolling Element Bearing; Roller bearings

Domaines: Matériaux

E. Bossy, J.P. Noyel, X. Kleber, F. Ville, C. Sidoroff, et al.. Competition between surface and subsurface rolling contact fatigue failures of nitrided parts: A Dang Van approach. Tribology International, 2019, 140, ⟨10.1016/j.triboint.2019.105888⟩. ⟨hal-02405414⟩