Interstitial solute trapping by edge dislocations
Journal Article
·
· Acta Metall.; (United States)
Interstitial solute trapping in the stress field of edge dislocations is considered when solute atoms interact among each other. The Fermi-Dirac statistics are used to account for the short-ranged repulsive interactions which prevents dual site occupancy. The elastic interaction between solute atoms is described in terms of a mean-field attaction plus a macroscopic interaction mediated by the coherency stress field associated with the nonuniform solute distribution. The enhancement of hydrogen solubility in Pd and ..cap alpha..-Fe due to trapping in the strain field of edge dislocations is evaluated and compared with experimental results.
- Research Organization:
- Sandia National Laboratories, Livermore, CA
- OSTI ID:
- 6244047
- Journal Information:
- Acta Metall.; (United States), Vol. 33:11
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
HYDROGEN
DIFFUSION
IRON
ATOM TRANSPORT
EDGE DISLOCATIONS
TRAPPING
PALLADIUM
FERMI STATISTICS
MASS DISTRIBUTION
PARTICLE INTERACTIONS
SOLUBILITY
STRAINS
STRESS ANALYSIS
STRUCTURAL CHEMICAL ANALYSIS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DISLOCATIONS
DISTRIBUTION
ELEMENTS
INTERACTIONS
LINE DEFECTS
METALS
NEUTRAL-PARTICLE TRANSPORT
NONMETALS
PLATINUM METALS
RADIATION TRANSPORT
SPATIAL DISTRIBUTION
TRANSITION ELEMENTS
360102* - Metals & Alloys- Structure & Phase Studies
HYDROGEN
DIFFUSION
IRON
ATOM TRANSPORT
EDGE DISLOCATIONS
TRAPPING
PALLADIUM
FERMI STATISTICS
MASS DISTRIBUTION
PARTICLE INTERACTIONS
SOLUBILITY
STRAINS
STRESS ANALYSIS
STRUCTURAL CHEMICAL ANALYSIS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DISLOCATIONS
DISTRIBUTION
ELEMENTS
INTERACTIONS
LINE DEFECTS
METALS
NEUTRAL-PARTICLE TRANSPORT
NONMETALS
PLATINUM METALS
RADIATION TRANSPORT
SPATIAL DISTRIBUTION
TRANSITION ELEMENTS
360102* - Metals & Alloys- Structure & Phase Studies