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VOID FORMATION IN UNIDIRECTIONAL SOLIDIFICATION.

Author(s) : TAGAVI K., CHOW L. C., SOLAIAPPAN O.

Type of article: Article

Summary

VISUAL AND PHOTOGRAPHIC OBSERVATIONS OF UNIDIRECTIONAL SOLIDIFICATION OF LIQUIDS THAT SHRINK BY ABOUT 10% IS REPORTED. THE LIQUID IS CONTAINED IN A CONSTANT-VOLUME (SEALED) CYLINDRICAL CELL. TO ESTIMATE THE EFFECT OF GRAVITY, COOLING IS PROVIDED FROM ABOVE OR BELOW. FOR DEGASSED LIQUIDS, WHEN SOLIDIFIED FROM BELOW, IT IS OBSERVED THAT THE SHRINKAGE IS ACCOMMODATED AT THE TOP. WHEN SOLIDIFIED FROM ABOVE, THE SHRINKAGE IS ACCOMMODATED BY FORMATION OF VOIDS AND WORMS FILLED WITH VAPOUR. IT IS OBSERVED THAT DISSOLVED GASES TEND TO DISTRIBUTE THE VOIDS FOR BOTH SOLIDIFICATION FROM BELOW AND ABOVE.

Details

  • Original title: VOID FORMATION IN UNIDIRECTIONAL SOLIDIFICATION.
  • Record ID : 1991-2499
  • Languages: English
  • Source: Exp. Heat Transf. - vol. 3 - n. 3
  • Publication date: 1990
  • Document available for consultation in the library of the IIR headquarters only.

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