摘要
以热力学相容方式，使偏析系数和界面温度与界面速度相关，把非平衡影响与平面峰面的线性稳定性分析结合起来．改变了细胞晶型绝对稳定界限．形成一种新的振荡不稳定，导致固体中出现溶质带，它的绝对稳定界限由溶质原子捕集和附着运动确定．分析结果与实验一致．
By allowing the segregation coefficient and interface temperature to depend on interface speed in a thermodynamically\|consistent way,the non\|equilibrium effects are incorporated into a linear stability analysis of planar front.The absolute stability limit of the cellular mode is modified.A new oscillatory instability is found,which leads to the formation of solute bands in the solid,and its absolute\|stability limit is determined by solute trapping and kinetics.The results of this theory are in agreement with observations. PACC: 8130F; 8110F; 6470
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第8期1547-1551,共5页
Acta Physica Sinica
