An analytical model for solute redistribution during solidification of planar, columnar, or equiaxed morphology
Journal Article
·
· Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States)
- Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Metallurgical and Materials Engineering
Existing models for solute redistribution (microsegregation) during solidification were reviewed. There are no analytical models that take into account limited diffusion in both the liquid and the solid phases. A new analytical mathematical model for solute redistribution was developed. Diffusion in liquid and in solid was considered. This model does not require a prescribed movement of the interface. It can be used for one-dimensional (1-D) (plate), two-dimensional (cylinder), or three-dimensional (3-D) (sphere) calculations. Thus, it is possible to calculate microsegregation at the level of primary or secondary arm spacing for columnar dendrites or for equiaxed dendrites. The solution was compared with calculations based on existing models, as well as with some available experimental data for the segregation of base elements in as cast Al-4.9 wt pct Cu, INCONEL 718, 625, and plain carbon (0.13 wt pct C) steel.
- OSTI ID:
- 6303183
- Journal Information:
- Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States), Journal Name: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States) Vol. 24:9; ISSN 0360-2133; ISSN MTTABN
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOY-NI53CR19FE19NB5MO3
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
CARBON STEELS
CHROMIUM ALLOYS
COPPER ALLOYS
CORROSION RESISTANT ALLOYS
DISTRIBUTION
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCONEL 718
INCONEL ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATHEMATICAL MODELS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM A
ONE-DIMENSIONAL CALCULATIONS
PHASE TRANSFORMATIONS
SEGREGATION
SOLIDIFICATION
SOLUTES
STEELS
THREE-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL CALCULATIONS
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOY-NI53CR19FE19NB5MO3
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
CARBON STEELS
CHROMIUM ALLOYS
COPPER ALLOYS
CORROSION RESISTANT ALLOYS
DISTRIBUTION
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCONEL 718
INCONEL ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATHEMATICAL MODELS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM A
ONE-DIMENSIONAL CALCULATIONS
PHASE TRANSFORMATIONS
SEGREGATION
SOLIDIFICATION
SOLUTES
STEELS
THREE-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL CALCULATIONS