On the Yield Strength of Single-Crystal Zinc under Uniaxial Compression in a Plane Shock Wave

Shock response of magnesium single crystals at normal and elevated temperatures

“…During recent decades, shock-wave studies of the dynamic yielding and fracture of metal single crystals have been performed on face-centered cubic (fcc) metals; such as copper [13][14][15][16] and aluminum, [17][18][19][20] body-centered cubic (bcc) metals, such as molybdenum; 21 and hexagonal close-packed (hcp) metals, such as beryllium 22 and zinc. 23,24 Shock studies with aluminum and zinc single crystals have been done over a wide range of temperatures. In the case of aluminum, these have revealed an anomalous growth in the dynamic yield stress with increasing temperature.…”

“…Similar growth of the flow stress with temperature was not found in zinc single crystals when they were impacted on a prismatic ð10 10Þ plane, whereas at impact in the low elastic modulus (0001) basal plane, no elastic precursor wave was observed at all. 24 It thus remains unclear whether or not anisotropic single crystals exhibit anomalous growth in yield stress simultaneously for all orientations or whether the effect appears depending on the loading direction and, correspondingly, on the resolved shear stress in activated slip systems.…”