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Experiments were conducted to characterize the influence of texture and impact velocity on the dynamic, high-strain, tensile extrusion of zirconium. Bullet-shaped samples were machined from a clock-rolled, highly textured Zr plate. Specimens in two orthogonal directions were tested: the extrusion direction aligned with either the in-plane (IP) rolling or the through-thickness (TT) direction of the...
Because of twinning and texture evolution, the yield surface for hexagonal close-packed (hcp) metals significantly changes its shape with accumulated plastic deformation. Traditional hardening laws cannot accurately model these phenomena. In this paper, an anisotropic model that captures the influence of evolving texture on the plastic response of hcp metals is proposed. Initial yielding is described...
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