摘要
An asymptotic analysis of interfacial stability with the surface tension anisotropy is derived for directional solidification of alloys. The zero and first order solution for multi-scale and the zero order solution for single-scale are obtained. The dispersion relation adapted to all wave-length is presented by combining the short and the long wave-length solutions. It was concluded that the zero order asymptotic solution is equivalent to constitutional undercooling theory and the first order solution is consistent with M-S theory. The instability zone of control parameter enlarges with the surface tension anisotropy, especially for the high temperature gradient and high pulling velocity cases.
源语言 | 英语 |
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页(从-至) | 1246-1253 |
页数 | 8 |
期刊 | Wuli Xuebao/Acta Physica Sinica |
卷 | 57 |
期 | 2 |
出版状态 | 已出版 - 2月 2008 |