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MICRODYNAMICAL MECHANISM OF DYNAMIC SOLIDIFICATION OF ALLOYS |
JIAO Yuning;LIU Qingmin;YANG Yuansheng; HU Zhuangqi (Institute of Metal Research;Chinese Academy of Sciences;Shenyang) |
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Cite this article:
JIAO Yuning;LIU Qingmin;YANG Yuansheng; HU Zhuangqi (Institute of Metal Research;Chinese Academy of Sciences;Shenyang). MICRODYNAMICAL MECHANISM OF DYNAMIC SOLIDIFICATION OF ALLOYS. Acta Metall Sin, 1994, 30(12): 540-544.
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Abstract 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
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