Abstract
An investigation was made on the effect of rotational stirring on the microstructures, distribution of solute elements, carbide formation, phosphorus segregation, and distribution coefficients between solid and liquid phases in the Ni-base superalloy TMP-3 (Ni-11. 15%Cr-6.74%Co-3.12%Mo-3.98%Al-2.74%Ti-3.93%Nb-3.25%W) by rheocasting with the rotation of a stirrer in the range of 20 to 70 rev/s. The main results obtained are summarized as follows: (1) When the TMP-3 superalloy was sufficiently agitated at 70 s -1 from the start of solification, the dentrite structure was broken up and an equiaxed grain structure with the average primary solid particle size of 65±15 μm was formed
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