Orientation Evolution in the {0001}-Oriented Hexagonal Crystal during Channel Die Compression

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Abstract:

The activity of deformation modes and orientation evolution in the {0001}- oriented hexagonal crystals with basal slip as easy slip mode during channel die compression were investigated by crystal plasticity finite element method (CPFEM). Material parameters of magnesium and its alloys were used in CPFEM simulation. The pyramidal <c+a> slip contributes most of the strain in all cases of relative CRSS value and friction coefficient between mold and material. The friction coefficient has a more significant influence on the activity of various deformation modes and the orientation deviation from ideal {0001} orientation (<0001>//ND) compared with the relative CRSS value. The deviation angle can reach about 20° after 70% applied reduction under the friction coefficient of 0.20.

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188-193

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March 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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