Localization of Deformation in Copper Single Crystals During Explosive Collapse

摘要

It is established that high-rate axisymmetric loading of single crystals by the method of explosive collapse of a hollow thick-walled cylinder causes deformation that involves all active close-packed slip systems. The spatial distribution of macroscopic sites of strain localization is determined by the crystallography of the active sysetms in single-crystalline samples. The established correlation between the observed shear bands in the microstructure of copper single crystals and {111} active slip <110> systems of face-centered cubic (FCC) crystals and their symmetric arrangement show that deformation at a rate of approx = 5·10~4 sec~(-1) occurs according to the crystalline structure of the materials.