Onset of rod eutectic morphology in directional solidification


ŞEREFOĞLU KAYA M. , Napolitano R. E.

INTERNATIONAL JOURNAL OF CAST METALS RESEARCH, vol.22, no.1-4, pp.228-231, 2009 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 1-4
  • Publication Date: 2009
  • Doi Number: 10.1179/136404609x367795
  • Title of Journal : INTERNATIONAL JOURNAL OF CAST METALS RESEARCH
  • Page Numbers: pp.228-231
  • Keywords: Eutectic solidification, Geometric constraint, Rod array, Formation of eutectics, GROWTH, THIN

Abstract

Initial dynamics of morphological selection in a succinonitrile-(D) camphor organic transparent rod eutectic system is investigated experimentally using directional solidification with specimen thicknesses of 20 and 200 mm. The shape of the solid/liquid interface, the specimen thickness, the initial single-phase boundary thickness, and the grain boundaries are all observed to influence the onset of the eutectic morphology in a geometrically constrained system. Additionally, initiation of eutectic growth within a thin liquid layer at the specimen slide wall and lateral propagation of the array is observed, as suggested in a previous study by the present authors.