Abstract
Evolution of the dendrite growth and the distribution of concentration and temperature fields in a Ni-0.4083 at.% Cu alloy was simulated. The dendrite morphology was greatly affected by boundary conditions. The result shows that the solid/liquid interface of dendrite was most instable and grew most fast under extraction boundary condition. The re-calescence occurred under the extraction boundary condition and Zero-Neumann boundary condition, but not under the heating boundary condition.
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