Texture, Stress, and Microstructure

Texture, Stress, and Microstructure / 1999 / Article

Open Access

Volume 31 |Article ID 756906 | https://doi.org/10.1155/TSM.31.217

R. A. Lebensohn, T. Leffers, "The Rules for the Lattice Rotation Accompanying Slip as Derived From a Self-Consistent Model", Texture, Stress, and Microstructure, vol. 31, Article ID 756906, 14 pages, 1999. https://doi.org/10.1155/TSM.31.217

The Rules for the Lattice Rotation Accompanying Slip as Derived From a Self-Consistent Model

Received29 Jul 1998
Accepted12 Nov 1998

Abstract

The rules for the lattice rotation during rolling (plane strain) deformation of fcc polycrystals are studied with a viscoplastic self-consistent model. Very high values of the ratesensitivity exponent are used in order to establish Sachs-type conditions with large local deviations from the macroscopic strain. The lattice rotation depends on the grain shape. For equiaxed grains the lattice rotation follows the MA rule, which is the one normally used in solid mechanics. For elongated and flat grains the lattice rotation follows a different rule, the PSA rule. In the standard version the model performs a transition from MA to PSA with increasing strain. There is avery clear difference between the textures resulting from the two different rules. MA leads to a copper-type texture, and PSA leads to a brass-type texture.

Copyright © 1999 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.


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