3D simulation of texture evolution induced grain coarsening in FCC polycrystals during severe plastic deformation

Grain refinement versus voids accumulation during severe plastic deformations of polycrystals: mathematical simulation

We view the emergence of disorientation boundaries in crystals and the formation of micropores as complementary mechanisms of relaxation of internal strain during severe plastic deformations of polycrystals. Using an assumption of self-similarity of the grain refinement process, we obtain kinetic equations for two scalar parameters characterizing the structure of the material: the total area of...

A Self-consistent Anisotropic Approach for the Simulation of Plastic Deformation and Texture Development of Polycrystals: Application to Zirconium Alloys

-We present in this work a visco-plastic self-consistent (VPSC) anisotropic approach for modeling the plastic deformation of polycrystals, together with a thorough discussion of the assumptions involved and the range of application of such approach. We use the VPSC model for predicting texture development during rolling and axisymmetric deformation of Zirconium alloys, and to calculate the yiel...

Nanostructure, Texture Evolution and Mechanical Properties of Aluminum Alloys Processed by Severe Plastic Deformation

Comparison in 3D of Experiments on, and Simulations of Plastic Deformation of Polycrystals

This talk will address various aspects of image processing relevant to the plastic deformation of metals. The motivation behind the talk is to point out that the current state of comparisons between experiments and simulations of deformation of polycrystalline materials reveals some interesting challenges [1]. Addressing first the image processing issues, EBSD [2] relies heavily on image transf...

Influence of in-grain mesh resolution on the prediction of deformation textures in fcc polycrystals by crystal plasticity FEM

The ability of three different crystal plasticity finite element models to predict deformation textures in face-centered cubic metals observed in experiments is assessed. These methods are: (i) Taylor averaging, in which the interactions of the grains are considered in a homogenized manner; (ii) low-resolution simulation (LRS), in which grain interactions are considered explicitly albeit with l...