Nondirectional solidification

Exogenously created crystallites grow elongatedly in melt direction due to the thermal flow directed to the molding wall.

From a macroscopic point of view, a batch of crystallographically similiarly oriented, parallel dendrite axes represents a columnar crystal which can be made visibile during a cast structure macro-etching. Due to the nondirectional solidification heat runoff in the melt, endogenously created crystallites in the meld can become round grains (globulites) Fig. 1, see also directional solidification (according to S. Engler).

  • Fig. 1: Nomenclature of solidification structures – Nondirectional solidification (according to S. Engler)