J Mater Sci Technol ›› 1998, Vol. 14 ›› Issue (1): 9-14.

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Sub-high Rate Directional Solidification

Hengzhi FU; Xingguo GENG; Jianguo LI and Jun ZHANG (State Key Lab. of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China)   

  • Received:1998-01-28 Revised:1998-01-28 Online:1998-01-28 Published:2009-10-10

Abstract: The main features of morphology evolution of crystal growth during near rapid directional so lidification were reviewed and the concept of effective constitutional supercooIing was proposed.On the basis of interface stability theory combined with experiments, the behaviour of transition from dendrites to fine cells was quantitatively described, and the transition from cells to plane front of absolute stability was also examined.