Deformation Behavior of Copper upon Loading by Spherically Converging Shock Waves: Low-Intensity Loading Conditions

摘要

X-ray diffraction, optical metallography, transmission electron microscopy, and microhardness measurements were used to perform a layer-by-layer study of the structure of a copper sphere 70 mm in diam eter after loading by spherically converging Shock waves. It has been found that the high-rate plastic defor mation of copper proceeds mostly by slipping, rather than twinning underthe used loading conditions. Shear bands are observed at the macrolevel, while a homogeneous dislocation structure, microbands, and microt-wins are observed at the microlevel.