Table of Contents
Textures and Microstructures
Volume 28 (1997), Issue 3-4, Pages 167-179
http://dx.doi.org/10.1155/TSM.28.167

2 Dimensional Dislocation Dynamics – A New Technique for the Simulation of Deformation Microtextures

Collaborative Research Center for Materials Modeling, Institut für Metallkunde und Metallphysik, Rheinisch-Wesfälische Technische Hochschule Aachen, Kopernikusstr .14, Aachen 52056, Germany

Received 18 April 1996

Copyright © 1997 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A new technique for the simulation of microtexture evolution during cold deformation which is based on 2 dimensional (2D) dislocation dynamics is presented. In the simulation all involved dislocations are regarded as infinite straight line detects which are embedded in an otherwise isotropic linear elastic medium. As the model is 2D only edge dislocations are considered.

In the first simulation step the net local stresses are derived and used to calculate the resulting dislocation motion. Dislocation multiplication, annihilation and reactions are taken into account. Thermal activation is included. In the second step the local misorientations arising from the dislocation distribution are calculated.

This method shows in microscopic detail how misorientations are generated and distributed within grains during plastic deformation.