Istituto di Scienza e Tecnologie dell'Informazione     
Brocato M., Ehrlacher A., Tamagny P. Moving boundaries in polycrystals---lattice curvature effects. In: Moving Boundaries 2001 (Lemnos, Grecia, 9-11 maggio 2001). Proceedings, C.A. Brebbia (ed.). WIT Press, 2001.
We model polycrystals as Cosserat continua and focus on the three independent mechanisms working at the boundary of grains: glide, growth (progression of the discontiniuty front), and relative rotation of lattices. We propose a criterion and a flow rule for the three mentioned phenomena, then we introduce some costitutive assumptions and derive some new results on the relative spin of contiguous lattices.

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