Dependence of dynamic fracture resistance on crack velocity in tungsten: Pt. II. Bicrystals and polycrystals
Journal Article
·
· Metall. Trans., A; (United States)
OSTI ID:5034036
The experimental techniques for crack velocity measurements have been applied to bicrystals of tungsten with twist orientations about (100) and polycrystals. The hesitation of the propagating cleavage crack in the vicinity of the grain boundary is examined. The contributions to energy dissipation from deformation and fracture processes in the grain boundary region as well as the in direct effects of crack deceleration are discussed. These findings have been applied to explain th dynamic fracture resistance and crack arrest in polycrystals.
- Research Organization:
- State Univ. of New York at Stony Brook, Stony Brook, NY
- OSTI ID:
- 5034036
- Journal Information:
- Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 15A:6; ISSN MTTAB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
CRACK PROPAGATION
CRYSTAL STRUCTURE
CRYSTALS
DEFORMATION
ELEMENTS
FRACTOGRAPHY
FRACTURE PROPERTIES
GRAIN BOUNDARIES
GRAIN ORIENTATION
MEASURING METHODS
MECHANICAL PROPERTIES
METALS
MICROSTRUCTURE
ORIENTATION
POLYCRYSTALS
TRANSITION ELEMENTS
TUNGSTEN
VELOCITY
360103* -- Metals & Alloys-- Mechanical Properties
CRACK PROPAGATION
CRYSTAL STRUCTURE
CRYSTALS
DEFORMATION
ELEMENTS
FRACTOGRAPHY
FRACTURE PROPERTIES
GRAIN BOUNDARIES
GRAIN ORIENTATION
MEASURING METHODS
MECHANICAL PROPERTIES
METALS
MICROSTRUCTURE
ORIENTATION
POLYCRYSTALS
TRANSITION ELEMENTS
TUNGSTEN
VELOCITY