Convective transport phenomena and macrosegregation during solidification of a binary metal alloy. II. Experiments and comparisons with numerical predictions

Journal Article · Mon Aug 01 00:00:00 EDT 1994 · Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States)

DOI:https://doi.org/10.1115/1.2910930· OSTI ID:6956308

Prescott, P J ^[1]; Incropera, F P; Gaskell, D R ^[2]

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1. Pennsylvania State Univ., University Park, PA (United States)
2. Purdue Univ., West Lafayette, IN (United States)

Experiments involving the solidification of a Pb-19 percent Sn alloy in an axisymmetric, annular mold of stainless steel are performed, and results are compared with numerical predictions. Agreement between measured and predicted cooling curves is reasonable, although undercooling and recalescence, which occur in the experiments, are not predicted by the model. Measured temperatures also indicate that dendrite fragments are transported throughout the mold cavity during early stages of solidification, and convection patterns similar to those predicted by numerical simulation can be inferred from the measurements. While there is general agreement between measured and predicted trends for macrosegregation, the numerical simulation, which assumes axial symmetry, cannot predict the inherently three-dimensional nature of solute redistribution. Conclusions drawn from temperature and composition measurements are supported by metallographic examinations of experimental ingot specimens. 22 refs., 11 figs., 1 tab.

• DOE Contract Number: FG02-87ER13759
• OSTI ID: 6956308
• Journal Information: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States), Journal Name: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States) Vol. 116:3; ISSN 0022-1481; ISSN JHTRAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ALLOY SYSTEMS
ALLOYS
BINARY ALLOY SYSTEMS
CASTING MOLDS
CONVECTION
COOLING
ENERGY TRANSFER
HEAT TRANSFER
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
LEAD ALLOYS
MASS TRANSFER
MATHEMATICAL MODELS
METALLOGRAPHY
NUMERICAL SOLUTION
PHASE TRANSFORMATIONS
SOLIDIFICATION
STAINLESS STEELS
STEELS
TEMPERATURE MEASUREMENT
TIN ALLOYS