本文研究了熔液过热对溶质分配系数及对定向凝固过程中界面形态临界条件的影响。 研究发现,实际溶质分配系数是液体状态的函数。提高熔液过热度导致实际溶质分配系数的增大(K_o<<的元素),并减小固-液界面形态稳定的临界比值(G/R),从而有利于定向凝固的进行。
The effect of the melt superheat on the solute distribution coefficient and the critical condition of the interface morphology on the directional solidification has been studied. It is found that the actual distribution coefficient of solute is a function of liquid state. An increase of superheat of the melt causes the increase of actual distribution coefficient for such elements of K_0<1, and the decrease of the critical conditions of G/R associated with the stability of the solid-liquid interface morphologies which seems to be available to improving the directional solidification.
参考文献
| [1] | |
| [2] | Tiller, W. A. |
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