Paper Title:
Linking Meso- and Macroscale Simulations: Crystal Plasticity of hcp Metals and Plastic Potentials
  Abstract

A crystal plasticity model has been used to simulate channel die experiments on both, pure magnesium single crystals and polycrystalline textured rolled plates. Deformation mechanisms and slip system activity can be identified by FE-analyses of single crystals. The role of twinning can be understood and modeled phenomenologically by an additional slip system. Simulations of polycrystalline aggregates are used to obtain a representation of the material's phenomenological yield function in order to describe the plastic deformation behavior using the framework of continuum mechanics. This allows for accounting for the specific texture and thus for its optimization. The tension- compression asymmetry, which is typical for mechanically processed magnesium material, can be reproduced by means of the crystal plasticity and a phenomenological model.

  Info
Periodical
Materials Science Forum (Volumes 539-543)
Main Theme
Edited by
T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran
Pages
1741-1746
DOI
10.4028/www.scientific.net/MSF.539-543.1741
Citation
D. Steglich, S. Graff, W. Brocks, "Linking Meso- and Macroscale Simulations: Crystal Plasticity of hcp Metals and Plastic Potentials", Materials Science Forum, Vols. 539-543, pp. 1741-1746, 2007
Online since
March 2007
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$32.00
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