Geometrically necessary boundaries, incidental dislocation boundaries and geometrically necessary dislocations

The concept of statistically stored and geometrically necessary dislocations is discussed in terms of observed deformation microstructures subdivided by incidental dislocation and geometrically necessary boundaries. This discussion is illustrated by examples of microstructures formed under conditions of homogeneous and nonhomogeneous deformation, respectively. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.