J Mater Sci Technol ›› 2003, Vol. 19 ›› Issue (Supl.): 20-22.

• Research Articles • Previous Articles     Next Articles

Modeling Microstructural Evolution under the Influence of Thermosolutal Convection during Ingot Solidification Process

Qiang Li, Chunli Mo, Dianzhong Li, Bainian Qian   

  1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2003-12-28 Published:2009-10-10
  • Contact: Qiang Li

Abstract: A model combined both macroscopic transport and microstructural evolution is applied to describe the influence of thermosolutal convection on microstructural evolution during the solidification process. Firstly, the volume average method and Simpler algorithm are used to solve the macroscopic transport equation. Then the calculated results are incorporated into the cellular automaton (CA) model to simulate the microstructural evolution. Using this model, a simple casting ingot is applied to simulate microstructural evolution. Through the simulation, it is found that the thermosolutal convection has a strong influence on the redistribution of temperature field and solute field, which influence the solidification microstructural evolution.

Key words: Modeling, Thermosolutal convection, CA, Microstructural evolution