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.
Moving boundaries in polycrystals-lattice curvature effects
2001
Abstract
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.File in questo prodotto:
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Descrizione: Moving boundaries in polycrystals-lattice curvature effects
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