利用原子簇团跳跃理论模型，建立了动态结晶条件下的晶体生长速度微观动力学模型，指出古典连续生长（ＣｏｎｔｉｎｕｏｕｓＧｒｏｗｔｈ或ＣＧ）模型仅是本模型的一个特例．理论分析结果表明，晶体的生长速度除与金属本身性质有关外，还与过冷度△Ｔ、外力Ｆ有关．利用此模型分析了流体流动条件下柱状晶、柱状枝晶的某些结晶现象．
On the basis of the model of atomic cluster jump theory,a microdynamical model of crystal growth rate was developed under condition of the dynamic solidification.The classical continuous growth model seems to be only one of the special case.Theoretical analysis showed that the crystal growth rate is dependent on not only the nature of metal but also the supercooling,△T, and external force, F. Certain solidification behaviours of columnar crystals and columnar dendrites under fluid flow condition are explained by using of the model.JIAO Yuning, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015
参考文献
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