Paper Title:
Microstructural Modeling of Banding in Single Crystals: 'Stack of Domains' Model
  Abstract

A rigid-plastic rate-independent crystal plasticity based `stack of domains' model of a single crystal is developed to capture local deformation inhomogeneity and sub-structure formation when subjected to macroscopically homogeneous imposed deformation. This model regards the single crystal as a linear stack of domains with planar shaped domain boundaries. The domains of the model single crystal collectively accommodate the imposed deformation and individual domains maintain velocity and traction continuity with its neighbors. The lattice orientation of individual domains perturbed and that perturbation triggers the inhomogeneity of plastic slip amongst domains. Mobility of domain boundaries relative to the material and a differential hardening law that accounts for the orientational instability of individual domains are also considered in the model. The developed model is applied to predict the formation of banding in initially copper (C), rotated cube (RC) and Goss (G) orientated single crystals when subjected to plane strain deformation and the predictions are compared with the experimental literature.

  Info
Periodical
Materials Science Forum (Volumes 702-703)
Chapter
Chapter 2: Deformation
Edited by
Asim Tewari, Satyam Suwas, Dinesh Srivastava, Indradev Samajdar and Arunansu Haldar
Pages
200-203
DOI
10.4028/www.scientific.net/MSF.702-703.200
Citation
M. A. Kumar, "Microstructural Modeling of Banding in Single Crystals: 'Stack of Domains' Model", Materials Science Forum, Vols. 702-703, pp. 200-203, 2012
Online since
December 2011
Authors
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Price
$32.00
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