Description:
<jats:p>The crystallographic texture and Vickers hardness which develop
during wire-drawing of [001] oriented copper single
crystals have been studied experimentally as well by simulations.
The experiments revealed orientation changes producing
cross-shaped patterns in the {200} pole figures and
important variations in the Vickers hardness across the diameter.
Metallographic investigations showed the presence of deformation
bands perpendicular to the initial <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="E1"><mml:mrow><mml:mrow><mml:mo>〈</mml:mo><mml:mrow><mml:mn>100</mml:mn></mml:mrow><mml:mo>〉</mml:mo></mml:mrow></mml:mrow></mml:math> directions. By adopting a model for the velocity field
inside the die, simulations have been carried out by using a
Taylor type rate sensitive crystal plasticity model, including
microscopic hardening. The simulated pole figures show the
features of the experimental ones and the predicted stress levels
correlate well with the measured hardness data.</jats:p>