Multiple slip in bicrystal deformation

Slip band–grain boundary interactions in commercial-purity titanium

“…The most common stress relief mechanism is by generating new dislocations in the neighbouring grain [30][31][32][33][34][35][36].…”

“…Early research by Livingston and Chalmers [33] attempted to predict which slip system is more favourable during a slip transfer process, and for this purpose a criteria was proposed:…”

A predictive model for transferability of plastic deformation through grain boundaries

“…A simple form of the N-value has been defined as a ratio of RSSs between grains A and B, which can be evaluated from the orthogonal transformation of the stress tensor. 16 It has been shown that the N-value cannot be applied to the actual deformation of polycrystals since the intersection between a slip plane and GB plane should be considered during slip propagation. The following M-value has been proposed and successfully used to explain experimental results by taking into consideration the crystallographic orientation of the intersection.…”

“…Originally, the deformation of a bicrystal across the GB was described by a ratio of the RSS between two grains and strain compatibility. 16,17 This criterion, called the N-value, suggests how effectively the shear stress will be transformed from a grain with an emitted dislocation to a nearby grain. A criterion based on the N-value was then developed by introducing the geometric relationship of the intersection between each slip plane in a grain and a GB plane.…”

Deformation in NiAl bicrystals

“…An analysis of the elastic and plastic incompatibility in bicrystals of Al [54]and Fe-3% Si [55] has been shown to account for the unexpected slip systems observed to operate locally at the grain boundary. Noebe and…”