The effect of weld heat-affected zone (HAZ) liquation kinetics on the hot cracking susceptibility of alloy 718
Journal Article
·
· Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States)
- Univ. of Alabama, Birmingham (United States). Department of Materials Science and Engineering
A delay in grain boundary liquation was observed in the subsolidus portion of the weld heat affected zone (HAZ) of alloy 718 for the solution-treated material. However, for the homogenized and aged alloy, an instantaneous liquation of the grain boundaries occurred in the subsolidus HAZ. The above difference in the grain boundary liquation kinetics may account for the greater hot-cracking susceptibility of the homogenized or the homogenized and aged alloy compared to that of the solution-treated alloy. Existing models of grain boundary liquation are used to explain the observed kinetic effects associated with liquation in the subsolidus HAZ of alloy 718.
- OSTI ID:
- 6137913
- Journal Information:
- Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States), Vol. 24A:6; ISSN 0360-2133
- Country of Publication:
- United States
- Language:
- English
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+1 more
Morphology of weld heat-affected zone liquation cracking in Ta-modified cast alloy 718
Journal Article
·
Wed Nov 01 00:00:00 EST 1989
· Metallography (An International Journal); (USA)
·
OSTI ID:6137913
Related Subjects
36 MATERIALS SCIENCE
INCONEL 718
CRACK PROPAGATION
WELDING
AGING
FRACTURE PROPERTIES
GRAIN BOUNDARIES
HEAT AFFECTED ZONE
INTERMETALLIC COMPOUNDS
KINETICS
LIQUID METALS
MATHEMATICAL MODELS
NICKEL ALLOYS
NIOBIUM ALLOYS
NIOBIUM CARBIDES
ALLOY-NI53CR19FE19NB5MO3
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
CARBIDES
CARBON COMPOUNDS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
ELEMENTS
FABRICATION
FLUIDS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCONEL ALLOYS
IRON ALLOYS
JOINING
LIQUIDS
MATERIALS
MECHANICAL PROPERTIES
METALS
MICROSTRUCTURE
MOLYBDENUM ALLOYS
NICKEL BASE ALLOYS
NIOBIUM A
NIOBIUM COMPOUNDS
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZONES
360101* - Metals & Alloys- Preparation & Fabrication
360103 - Metals & Alloys- Mechanical Properties
INCONEL 718
CRACK PROPAGATION
WELDING
AGING
FRACTURE PROPERTIES
GRAIN BOUNDARIES
HEAT AFFECTED ZONE
INTERMETALLIC COMPOUNDS
KINETICS
LIQUID METALS
MATHEMATICAL MODELS
NICKEL ALLOYS
NIOBIUM ALLOYS
NIOBIUM CARBIDES
ALLOY-NI53CR19FE19NB5MO3
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
CARBIDES
CARBON COMPOUNDS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
ELEMENTS
FABRICATION
FLUIDS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCONEL ALLOYS
IRON ALLOYS
JOINING
LIQUIDS
MATERIALS
MECHANICAL PROPERTIES
METALS
MICROSTRUCTURE
MOLYBDENUM ALLOYS
NICKEL BASE ALLOYS
NIOBIUM A
NIOBIUM COMPOUNDS
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZONES
360101* - Metals & Alloys- Preparation & Fabrication
360103 - Metals & Alloys- Mechanical Properties