Implementation of Twin Reorientation and Softening Schemes in a Polycrystal Plasticity Model for Mg Alloys

Shi Hoon Choi; Y.S. Song; Jong Kweon Kim; B.J. Jung; Yong Bum Park

doi:10.4028/www.scientific.net/MSF.558-559.1063

Paper Titles

A Texture Component Model for Predicting Recrystallization Textures
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Modeling of Cube-Texture Evolution during Grain Growth in Ni Thick-Films based on Experimental Observations
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The Effect of Grain Boundary Junctions on Grain Microstructure Evolution: 3D Vertex Simulation
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Modeling Recrystallization in Aluminum Using Input from Experimental Observations
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Implementation of Twin Reorientation and Softening Schemes in a Polycrystal Plasticity Model for Mg Alloys
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Computer Simulations of Kinetics and Texture of Recrystallisation by a 3-D Potts Monte Carlo Model
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Computer Simulations Combining Finite Difference and Finite Element Methods: Solute Drag on Migrating Grain Boundaries in Three-Dimension
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Simulation of Recrystallization Using Molecular Dynamics; Effects of the Interatomic Potential
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On the Validation of the Monte Carlo Technique in Simulation of Grain Growth in Small, Two-Dimensional Systems
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HomeMaterials Science ForumMaterials Science Forum Vols. 558-559Implementation of Twin Reorientation and Softening...

Implementation of Twin Reorientation and Softening Schemes in a Polycrystal Plasticity Model for Mg Alloys

Abstract:

Uniaxial compression tests on hot-rolled AZ31 Mg alloy were carried out at a temperature of 300°C. In order to investigate work hardening and texture evolution during plastic deformation, cylindrical specimens were compressed to the rolling direction. Experimental investigation reveals that flow curves are strongly dependent on microstructure evolution such as deformation twinning and softening phenomenon. The occurrence of deformation twinning and softening phenomenon was revealed by the observation of microtexture using electron backscatter diffraction (EBSD). A visco-plastic self-consistent (VPSC) polycrystal model was used to simulate the work hardening, softening and texture evolution during the uniaxial compression. In order to calculate orientation of deformation twins, predominant twin reorientation (PTR) scheme was implemented into the polycrystal model. A softening scheme was also implemented in the polycrystal model to predict softening phenomenon and texture evolution after a peak stress.