2元系合金の凝固におけるセル状界面発生に関する一考察

抄録

In the unidirectional solidification of Al-Cu alloy, the preferred grain boundary segregation, the holes distributed at random on the solid-liquid interface, the “rosary-like segregation”, etc. were observed to occur with the cellular breakdown on solidification. These phenomena can hardly be explained by the constitutional supercooling or by the M-S theory.
The authors have already discussed the stability of the small pits on the solid-liquid interface, and from this point of view these phenomena are discussed in the current paper.