Geometrically necessary boundaries, incidental dislocation boundaries and geometrically necessary dislocations

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Modeling Dislocations and Disclinations With Finite Micropolar Elastoplasticity (2006, methodology): “…will account for the diffusion of crystallographic texture observed as subgrain cells – delineated in our present framework by walls of partial disclination dipoles – emerge and then rotate relative to one another (see e.g., Butler and McDowell, 1998; Peeters et al., 2001; Hughes et al., 2003).”
Thermal and mechanical stability of retained austenite surrounded by martensite with different degrees of tempering (2017, neutral): “Local changes in the lattice orientation reflect lattice curvature that can be associated with residual strain and geometrically necessary dislocations (GNDs) [31,32].”
Extra strengthening and work hardening in gradient nanotwinned metals (2018, background): “For uniform plastic deformation, dislocations accumulate by trapping one another in a randomway, giving rise to the storage of the so-called statistically stored dislocations (SSDs) (9).”
Perspective on hetero-deformation induced (HDI) hardening and back stress (2019, background): “The GND pile-up produces a stress concentration of nτ a at the boundary (the pilingup head) [55,56], where n is the number of GNDs in the”