The Rules for the Lattice Rotation Accompanying Slip as DerivedFrom a Self‐Consistent Model

Open Access
Publisher Website
Google Scholar
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.

This publication has 0 references indexed in Scilit: