Conference Tools for 2023 TMS Annual Meeting & Exhibition

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About this Abstract
Meeting	2023 TMS Annual Meeting & Exhibition
Symposium	Algorithm Development in Materials Science and Engineering
Presentation Title	Multiphase Microstructure-based Modeling for Rolling Contact Fatigue Life Prediction
Author(s)	Jinheung Park, Kijung Lee, Soonwoo Kwon, Myoung-Gyu Lee
On-Site Speaker (Planned)	Jinheung Park
Abstract Scope	Bearing steels typically consist of martensite and retained austenite to withstand the rolling contact fatigue (RCF) environments. Experiments report that the subsurface microstructure of bearing steels often exhibits deformation-induced martensitic transformation of retained austenite and mechanical softening caused by microstructural alterations under RCF process. These microstructural characteristics directly affect the fatigue resistance of bearing steel and can increase the uncertainty of fatigue behavior. In this study, a RCF life prediction model is developed considering the experimentally observed microstructural characteristics in martensitic steel. Virtual multiphase microstructure with hierarchically structured martensite and austenite phases is developed. Then, the deformation-induced martensitic transformation and dislocation-assisted carbon migration are numerically implemented in crystal plasticity (CP) finite element framework. The CP model is then coupled with continuum damage mechanics to predict crack initiation, propagation, and failure during RCF. Finally, the developed model is validated by predicting the Weibull distribution for RCF life with a probabilistic approach.
Proceedings Inclusion?	Planned:
Keywords	Modeling and Simulation, Computational Materials Science & Engineering, ICME

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