Modified Sachs’s Model of Deformation of Polycrystalline Magnesium

Resumo

There are a large number of approaches to a description of work hardening of metal polycrystals with various crystal lattices. In the present work, Sachs’s model is generalized to uniaxial tension/compression of polycrystalline magnesium with hexagonal densely packed crystal lattice. The tensile yield stress is estimated taking into account two deformation modes: \( (0001)\left\langle 11\overline{2}0\right\rangle \) easy basal slip and \( \left(10\overline{1}2\right)\left\langle \overline{1}011\right\rangle \) twinning.