Abstract
The solidification morphology in the solidification of ternary alloy, succinonitrile-ethanol-acetone, is observed in-situ.Peculiar morphology to ternary alloy solidification is found near the monotectic composition of the alloy. Dimensions of the morphology is about one order of magnitude smaller than those of ordinary dendrites in the same solidification conditions (the growth rate and temperature gradient). In the microgravity condition the dimensions become larger than those solidified on the ground.