Investigation on stability of directionally solidified CBr4-C2Cl6 lamellar eutectic by using multiphase field simulation

• 来源期刊: 中国物理（英文版）
• 关键词: multiphase field directional solidification morphological instability stability diagram
• 年，卷（期）: 2007,（3）
• 页码范围: 805-811
• 页数: 7页
• 语种: 英文

摘要

With the multiphase field method,the stability of lamellar basic state is investigated during the directional solidification of eutectic alloy CBr4-C2Cl6.A great number of lamellar patterns observed in experiments are simulated,and a stability diagram for lamellar pattern selections is presented.The simulated growth behaviours of these patterns are found to be qualitatively consistent with Karma et al'S numerical calculations and experimental results.The formation of the primary instability is attributed to the destabilization of solute boundary layer.