The mechanism of the ß-relaxation in high-purity bcc metals
Abstract
The thermally activated and stress-assisted generation of kink pairs on {110} slip planes of a0d 111¢/2 screw dislocations in bcc metals is identified as the origin of the g-relaxation (Chambers-Schultz nomenclature). This identifaction accounts very well for the available data on high-purity transition metals (notably Mo and f-Fe). It explains why foreign interstitial atoms or defects generated by irradiation are necessary for the g-relaxation to occur but do not significantly affect the relaxation process per se.
- Publication:
-
Philosophical Magazine Letters
- Pub Date:
- 2003
- DOI:
- 10.1080/0950083021000053329
- Bibcode:
- 2003PMagL..83..107S