Characterization of extrinsic grain boundary dislocations and grain boundary dislocation sources by transmission electron microscopy. Annual report, June 1, 1979-April 1, 1980
This report outlines some preliminary experiments on grain boundaries, grain boundary ledges, and the apparent emission of dislocations from grain boundary ledges, as part of an attempt to directly observe the emission of dislocations from grain boundary ledge sources in-situ by high-voltage transmission electron microscopy. Observations of grain boundary ledges and dislocation emission profiles in strained sheets of 304 stainless steel are described. Preliminary results indicate that the number of dislocation profiles per unit length of grain boundary are related to the engineering strain, as are the mean profile lengths. In addition, ledge density increases with increasing strain, and grain boundary structure changes with increasing strain.
- Research Organization:
- New Mexico Inst. of Mining and Technology, Socorro (USA). Dept. of Metallurgical and Materials Engineering
- Sponsoring Organization:
- USDOE Office of Basic Energy Sciences
- DOE Contract Number:
- AC04-79AL10887
- OSTI ID:
- 5076670
- Report Number(s):
- DOE/AL/10887-T1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
STAINLESS STEEL-304
GRAIN BOUNDARIES
DISLOCATIONS
GRAIN GROWTH
METALLURGY
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
LINE DEFECTS
MATERIALS
MICROSTRUCTURE
NICKEL ALLOYS
STAINLESS STEELS
STEELS
360102* - Metals & Alloys- Structure & Phase Studies