Structure and diffuseness model of solid-liquid interface for binary alloys

Yaw Delali Bensah

Research output: Contribution to journalArticlepeer-review

Abstract

Using the morphological instability at the solid–liquid interface as a basis by the maximum entropy production rate principle (MEPR), a model is presented on the morphological structure and diffuseness of the interface during directional solidification of binary alloys. It is shown that, the independent diffuseness theory of Cahn and the Jackson roughness criterion can be unified at a limiting condition under this new MEPR solidification model. The model under the principle of MEPR is applied to describe the evolution of atomistically smooth and rough interfaces through the evaluation of the size of the solid–liquid interface and the of number atomic layers. The model is tested with data for binary alloys of aluminium, lead, and tin at varying solute concentrations. The results showed strong agreement with available data from experimental measurements.

Original languageEnglish
Article number106845
JournalResults in Physics
Volume52
DOIs
Publication statusPublished - Sep 2023

Keywords

  • Cellular morphology
  • Facet/non-facet morphological transition
  • Maximum entropy production rate (MEPR)
  • Planar morphology
  • Solid–liquid interface

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