TY - JOUR
T1 - A model of inverse segregation
T2 - the role of microporosity
AU - Voller, V. R.
AU - Sundarraj, Suresh
PY - 1995/4
Y1 - 1995/4
N2 - A numerical model of inverse segregation in a vertically cast unidirectionally solidified aluminum-copper binary alloy is presented. The model predicts the solute concentration distribution up the length of the casting. The model is validated on comparison with available analytical solutions. Initial comparisons with experiments show that the model predicts a non-physical region of positive segregation in the upper part of the casting. On accounting for microporosity formation, however, the model predictions show close agreement with experimental measurements. Application of the model also demonstrates the need to correctly account for microsegregation processes.
AB - A numerical model of inverse segregation in a vertically cast unidirectionally solidified aluminum-copper binary alloy is presented. The model predicts the solute concentration distribution up the length of the casting. The model is validated on comparison with available analytical solutions. Initial comparisons with experiments show that the model predicts a non-physical region of positive segregation in the upper part of the casting. On accounting for microporosity formation, however, the model predictions show close agreement with experimental measurements. Application of the model also demonstrates the need to correctly account for microsegregation processes.
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U2 - 10.1016/0017-9310(94)00221-G
DO - 10.1016/0017-9310(94)00221-G
M3 - Article
AN - SCOPUS:0029278421
SN - 0017-9310
VL - 38
SP - 1009
EP - 1018
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
IS - 6
ER -