Atomic defects and diffusion in metals
The tracer self-diffusion data for fcc and refractory bcc metals are briefly reviewed with respect to (i) the available monovacancy formation and migration properties and (ii) the high-temperature diffusion enhancement above that expected for mass transport via atomic exchange with monovacancies. While the atomic-defect mechanism for low-temperature self-diffusion can be reliably attributed to monovacancies, the mechanisms responsible for high-temperature mass transport are not so easily defined at this time; both divacancies and interstitials must be seriously considered. Possibilities for improving our understanding in this area are discussed. 68 references, 7 figures.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 6338530
- Report Number(s):
- CONF-811150-17; ON: DE83007774
- Resource Relation:
- Conference: Yamada conference on point defects and defect interactions in metals, Kyoto, Japan, 16 Nov 1981; Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
METALS
SELF-DIFFUSION
BCC LATTICES
EVALUATED DATA
FCC LATTICES
INTERSTITIALS
KINETICS
REVIEWS
VACANCIES
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DATA
DIFFUSION
DOCUMENT TYPES
ELEMENTS
INFORMATION
NUMERICAL DATA
POINT DEFECTS
360104* - Metals & Alloys- Physical Properties
METALS
SELF-DIFFUSION
BCC LATTICES
EVALUATED DATA
FCC LATTICES
INTERSTITIALS
KINETICS
REVIEWS
VACANCIES
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DATA
DIFFUSION
DOCUMENT TYPES
ELEMENTS
INFORMATION
NUMERICAL DATA
POINT DEFECTS
360104* - Metals & Alloys- Physical Properties