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Meeting MS&T21: Materials Science & Technology
Symposium Multi Scale Modeling of Microstructure Deformation in Material Processing
Presentation Title Multi Scale Modeling with Microstructure Characteristics of Martensitic Steel 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 under rolling contact fatigue (RCF) typically have martensitic microstructure with high carbon contents to enhance resistance to cyclic contact stress in harsh environment. Under the RCF condition, the martensitic transformation of retained austenite and mechanical softening resulted from microstructural alterations occur at the subsurface of bearing steel. These microstructure effects combined with external loadings initiate cracks at subsurface and eventually leads to failure. The objective of this study is to predict the RCF life-span considering the microstructure characteristics of martensitic bearing steel. For this purpose, the hierarchical multiphase microstructure is virtually generated using Voronoi tessellation. Also, the crystal plasticity finite element model is extended by incorporating the microstructural alterations based on the dislocation-assisted carbon migration theory and the deformation-induced martensitic transformation. The crystal plasticity simulation coupled with the continuum damage mechanics enables to predict the RCF life-span.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Crystal Plasticity-based Forming Limit Prediction for Ultra-thin Bipolar Plate for Proton Exchange Membrane Fuel Cells
Crystal Plasticity Modeling of Twin Variant Selection in HCP Magnesium
Enabling Accurate Coarse-grained Atomistic Simulation of Defect Behavior in Random Alloys
Finite Element Simulation of Grain Growth with an Arbitrary Grain Boundary Energy and Explicit Grain Boundary Representation
Hot Deformation Microstructure and Processing Map of Cast Ni-based Superalloy IN-100
Microstructural Evolution from Hot Torsion Tests for Material Modeling and Parameterization
Multi Scale Modeling with Microstructure Characteristics of Martensitic Steel for Rolling Contact Fatigue Life Prediction
Numerical Studies of the Effect of Phase Stability on the Deformation Behavior of FeMnNiCoMo High Entropy Alloy
Sensitivity Analysis, Identification and Validation of the Stochastic Model Describing Evolution of Microstructural Parameters during Hot Forming of Metallic Materials
Study of Near Boundary Gradient Zones in an Aluminum Alloy Using Strain Gradient Crystal Plasticity and Experiments
The Formation of Irradiation Induced Defects in NiTi and their Effects on the Martensitic Transformation
The Role of the Initial Digital Microstructure Generation Algorithm in the Cellular Automata Static Recrystallization Predictions
Using Martensite Crystallography to Determine Transformation: Induced Deformation of Ferrite In Dual-phase Steels

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