Microstructure based flow curve modeling of high-mn steels with twip and trip effect
TL;DRAbstract
In the present work a microstructural model based on representative volume elements (RVE) is proposed for high manganese steels with TWIP and TRIP effect. The polycrystalline structure is generated by spatial discretization of the RVE in three-dimensional Voronoi tessellations. For the hardening behavior a constitutive material model is used based on the evolution of dislocation, twin and epsilon-martensite density. The plastic deformation is investigated numerically using periodic displacement boundary conditions. In addition to the parameters of temperature and microstructure the influence of the chemical heterogeneity is investigated. The experimental verification of the numerical results is done by uniaxial tensile tests on flat tensile specimens.
Chat with Paper
AI Agents for this Paper
In the present work a microstructural model based on representative volume elements (RVE) is proposed for high manganese steels with TWIP and TRIP effect. The polycrystalline structure is generated by spatial discretization of the RVE in three-dimensional Voronoi tessellations. For the hardening behavior a constitutive material model is used based on the evolution of dislocation, twin and epsilon-martensite density. The plastic deformation is investigated numerically using periodic displacement boundary conditions. In addition to the parameters of temperature and microstructure the influence of the chemical heterogeneity is investigated. The experimental verification of the numerical results is done by uniaxial tensile tests on flat tensile specimens.
Keywords
Chat
Click to start Chat