J. Mater. Sci. Technol. ›› 1998, Vol. 14 ›› Issue (6): 497-505.

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Progress of Nonequilibrium Solidification Theory

Qingchun LI; Chengsong CUI and Daming XU(Harbin Institute of Technology, Harbin 150001, China)Xiaoguang YUAN(Jilin University of Technology Changchun 130025, China)   

  • Received:1998-11-28 Revised:1998-11-28 Online:1998-11-28 Published:2009-10-10

Abstract:

This paper summarized the theory related to nucleation, interface kinetics, micromorphology evolution and microscopic growth during nonequilibrium alloy solidification. Methods for quantitative analysis of nucleation rate, the criterion of marginal stability, nonequilibrium partition coefficient, as well as the relationship between growth rate with undercooling and dendrite tip radius are presented. Some limitations and future developments of nonequilibrium theory are pointed out.