If the density of the first crystallized solid phase differs greatly from that of the liquid phase, it will float or sink in the liquid phase; However, due to the low concentration of solutes in the pre crystalline phase; The resulting difference in composition between the upper and lower parts of the ingot is called density segregation. density segregation is a kind of macroscopic nonequilibrium segregation. density segregation can be significantly reduced by using electromagnetic stirring technology during solidification.
No classification at present.