Grain-boundary diffusion: structural effects, models and mechanisms

Conference · Mon Jan 01 00:00:00 EST 1979

OSTI ID:5764441

Peterson, N L

Grain boundary diffusion phenomena were considered including: anisotropy, effect of orientation, crystallographic transformation, boundary type, dislocation dissociation, pressure, and isotope effects. Diffusivity is different for various boundaries. Dissociated dislocations and stacking faults are not efficient paths for grain boundary diffusion. Results suggest a vacancy mechanism along the dislocation core, and involves atomic jumps away from the back towards the dislocation as well as jumps along the core. Measurements were made on nickel and silver. (FS)

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 5764441
• Report Number(s): CONF-7909100-1
• Resource Relation: Conference: American Society of Metals seminar, Milwaukee, WI, USA, 15 Sep 1979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
GRAIN BOUNDARIES
COPPER
SORPTIVE PROPERTIES
NICKEL
NICKEL 63
DIFFUSION
SILVER
SILVER 110
ANISOTROPY
CRYSTAL LATTICES
DISLOCATIONS
SELF-DIFFUSION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DAYS LIVING RADIOISOTOPES
ELEMENTS
EVEN-ODD NUCLEI
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LINE DEFECTS
METALS
MICROSTRUCTURE
NICKEL ISOTOPES
NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SILVER ISOTOPES
SURFACE PROPERTIES
TRANSITION ELEMENTS
YEARS LIVING RADIOISOTOPES
360102* - Metals & Alloys- Structure & Phase Studies