Dynamics of spacing adjustment and recovery mechanisms of ABAC-type growth pattern in ternary eutectic systems


Mohagheghi S., Serefoglu M.

JOURNAL OF CRYSTAL GROWTH, vol.470, pp.66-74, 2017 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 470
  • Publication Date: 2017
  • Doi Number: 10.1016/j.jcrysgro.2017.04.008
  • Title of Journal : JOURNAL OF CRYSTAL GROWTH
  • Page Numbers: pp.66-74
  • Keywords: Eutectics, Solidification, Directional solidification, Optical microscopy, Bridgman technique, Alloys, IN-SITU OBSERVATION, MORPHOLOGICAL INSTABILITIES, DIRECTIONAL SOLIDIFICATION, LAMELLAR, THIN, SN, STABILITY, MICROSTRUCTURE, ALLOYS

Abstract

In directionally solidified 2D samples at ternary eutectic compositions, the stable three-phase pattern is established to be lamellar structure with ABAC stacking, where A, B, and C are crystalline phases. Beyond the stability limits of the ABAC pattern, the system uses various spacing adjustment mechanisms to revert to the stable regime.