Grain boundary liquid film migration during welding of Incoloy 903
Journal Article
·
· Scripta Metallurgica et Materialia; (United States)
- Manitoba, University, Winnipeg (Canada) Bristol Aerospace, Ltd., Winnipeg (Canada)
The phenomenon of migration is reported for a supersaturated liquid film that had been created via the constitutional liquation of heat-affected zone (HAZ) grain boundary-associated Nb-rich carbides during the welding of Incoloy 903. The supersaturation is relieved by solute transport in the liquid film; this process dissolves the gamma matrix lying ahead of the migration, and deposits an Nb-enriched gamma solid solution behind it. Supersaturation-relief can therefore be accomplished by both liquid film migration and Nb-enriched gamma formation, as well as through normal resolidification over a larger temperature range. 26 refs.
- OSTI ID:
- 7203279
- Journal Information:
- Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 26:10; ISSN SCRME; ISSN 0956-716X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CARBIDES
CARBON COMPOUNDS
COBALT ALLOYS
CRYSTAL STRUCTURE
DISPERSIONS
ELECTRON BEAM WELDING
ELEMENTS
FABRICATION
FILMS
FLUIDS
GRAIN BOUNDARIES
HEAT AFFECTED ZONE
INCOLOY ALLOYS
IRON ALLOYS
JOINING
LIQUID METALS
LIQUIDS
MASS TRANSFER
METALS
MICROSTRUCTURE
MIXTURES
NICKEL ALLOYS
NIOBIUM CARBIDES
NIOBIUM COMPOUNDS
REFRACTORY METAL COMPOUNDS
SATURATION
SOLID SOLUTIONS
SOLUTIONS
SUPERSATURATION
TRANSITION ELEMENT COMPOUNDS
WELDABILITY
WELDING
ZONES
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CARBIDES
CARBON COMPOUNDS
COBALT ALLOYS
CRYSTAL STRUCTURE
DISPERSIONS
ELECTRON BEAM WELDING
ELEMENTS
FABRICATION
FILMS
FLUIDS
GRAIN BOUNDARIES
HEAT AFFECTED ZONE
INCOLOY ALLOYS
IRON ALLOYS
JOINING
LIQUID METALS
LIQUIDS
MASS TRANSFER
METALS
MICROSTRUCTURE
MIXTURES
NICKEL ALLOYS
NIOBIUM CARBIDES
NIOBIUM COMPOUNDS
REFRACTORY METAL COMPOUNDS
SATURATION
SOLID SOLUTIONS
SOLUTIONS
SUPERSATURATION
TRANSITION ELEMENT COMPOUNDS
WELDABILITY
WELDING
ZONES