Modelling High Temperature RollingTextures of FCC Metals
1992
A partially relaxed constraints grain deformation model is proposed to explain the influence of
temperature on the rolling textures of fcc metals. The effects of the grain plastic shear in the TD/RD
plane and the role of the rate sensitivity of crystallographic slip on the evolution of the texture have
been investigated by numerical simulations for a random initial texture. The rate sensitivity and the
TD/RD shear are assumed to increase with temperature. The progression from the Copper
{112} component towards Brass {110} and S {123} type textures is predicted at
higher values of the rate sensitivity and the TD/RD shear. These model predictions compare well with
published hot rolling textures of aluminium alloys. The concept of grain shear partial relaxation has
been validated by room and high temperature channel die tests on {110} oriented Al crystals
constrained between aluminium polycrystals.
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