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Romanov
77-30569/259988 Model representation of two-phase zone for calculating the shrinkage porosity in nickel superalloy castings
Engineering Education # 01, January 2012 In this article the mathematical model of shrinkage defect in nickel superalloys was introduced. Several important models dendritic skeleton permeability of two-phase zone were considered. The output of original permeability coefficient model was shown. This model takes in account the influence of casting microstructure on the nature of processes in two-phase zone. The simulation of quasi-stationary directed crystallization of nickel superalloy was carried out. The results of this simulation are in good qualitative and quantitative correlation with known experimental data.
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