DISLOCATION CHANNELING IN IRRADIATED METALS,
Abstract
The present understanding of the phenomenon of dislocation channeling, or the removal of defect aggregates from the slip plane by glide dislocations in irradiated or quenched metals, is reviewed. Channeling is a general feature of any system where penetrable defect aggregates are removed by the glide dislocations. The crystallography of the channels and their correspondence with surface slip traces is shown to be well established. It is shown that several areas of the problem require further research in order to gain an adequate understanding of the phenomenon. In particular the mechanism of initiation of the channels, the dislocation-defect interaction mechanism in which defects are annihilated or assimilated, and the mechanism of work hardening, which stops further deformation in a channel, require further study. In addition, a quantitative correlation between the microscopic parameters of channeling and the macroscopic properties of the work hardening coefficient and ductility is needed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 03, 1970
- Accession Number
- AD0710358
Entities
People
- Fred A. Smidt Jr
Organizations
- United States Naval Research Laboratory