Numerical Modelling of Plastic Deformation and Subsequent Recrystallization in Polycrystalline Materials, Based on a Digital Material Framework

Roland E. Logé; Marc Bernacki; H. Resk; H. Digonnet; T. Coupez

doi:10.4028/www.scientific.net/MSF.558-559.1133

Paper Titles

Recrystallization and Mechanical Properties of Hot Rolled Seamless Steel Tubes
p.1107

Three Dimensional Monte Carlo Simulation of Isotropic Coarsening of Particles in Liquid Phase
p.1115

On Strain-Induced Grain Growth Using Modified Monte Carlo Method and Digital Image Correlation Technique
p.1121

Prediction of the Microstructural Evolution during Hot Strip Rolling of Nb Microalloyed Steels
p.1127

Numerical Modelling of Plastic Deformation and Subsequent Recrystallization in Polycrystalline Materials, Based on a Digital Material Framework
p.1133

A New Approach to Model Heterogonous Recrystallization Kinetics Based on the Natural Inhomogeneity of Deformation
p.1139

Preliminary Simulation for Competing Behaviors between Recrystallization and Transformation in Dual Phase Steels
p.1145

Mixed Vertex - Monte Carlo Model of Recrystallization
p.1151

Generalized Vertex Model - Study of Recrystallization in Copper
p.1157

HomeMaterials Science ForumMaterials Science Forum Vols. 558-559Numerical Modelling of Plastic Deformation and...

Numerical Modelling of Plastic Deformation and Subsequent Recrystallization in Polycrystalline Materials, Based on a Digital Material Framework

Abstract:

The development of a digital material framework is presented, allowing to build virtual microstructures in agreement with experimental data. The construction of the virtual material consists in building a multi-level Voronoï tessellation. A polycrystalline microstructure made of grains and sub-grains can be obtained in a random or deterministic way. A corresponding finite element mesh can be generated automatically in 3D, and used for the simulation of mechanical testing under large strain. In the examples shown in this work, the initial mesh was non uniform and anisotropic, taking into account the presence of interfaces between grains and sub-grains. Automatic remeshing was performed due to the large strains, and maintained the non uniform and anisotropic character of the mesh. A level set approach was used to follow the grain boundaries during the deformation. The grain constitutive law was either a viscoplastic power law, or a crystallographic formulation based on crystal plasticity. Stored energies and precise grain boundary network geometries were obtained directly from the deformed digital sample. This information was used for subsequent modelling of grain growth with the level set approach, on the same mesh.