Abstract
The effect of the rate of the directional solidification of ZhS32-VI superalloy on the primary dendrite arm spacing and the size of shrinkage solidification pores is studied. The conditions for the reduction of the materials of a ceramic shell mold and a ceramic rod with the formation of CO bubbles, which result in gaspore formation, are estimated thermodynamically. A mechanism for pore formation during the directional solidification of single-crystal turbine rotor blades is proposed.
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