%0 Journal Article
%T MORPHOLOGICAL INSTABILITY IN RAPID DIRECTIONAL SOLIDIFICATION<br>定向快凝中的晶态不稳定性
%A DU JIA-LING
%A <br>杜嘉陵
%J 物理学报
%D 1999
%I 
%X 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.
%K 晶态
%K 稳定性
%K 合金
%K 凝固
%K 定向快凝
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=3E03C15FFAFF9018&yid=B914830F5B1D1078&vid=B6DA1AC076E37400&iid=5D311CA918CA9A03&sid=D9E4B4338A9AF29A&eid=044F0D973C30117E&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0