Fracture Mechanisms Caused by Shock-Induced Microtwinning.
Abstract
The shock-induced microstructure of copper was investigated in order to determine the relationship of this substructure to failure. Three substructural modifications were found subsequent to shock-loading: microtwinned regions, cellular dislocation substructure, and fine internal porosity. The morphology of the twinned regions depended upon crystallographic orientation relative to the shock axis. The average dislocation cell size increased with decreasing shock pressure and could be related to calorimetric observations. No cumulative long-range lattice misorientation resulted from shock-loading. The pores were found to be crystallographic in shape and were associated with the failure interface. Moreover, the pores contained structures interpreted as microtwinned regions. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1973
- Accession Number
- AD0766951
Entities
People
- Victor A. Greenhut
Organizations
- Rutgers University–New Brunswick