STOCHASTIC DYNAMICS FOR NONEQUILIBRIUM SOLUTE DISTRIBUTION AT SOLID-LIQUID INTERFACE

Acta Metall Sin

1997, Vol. 33

Issue (5): 455-460 DOI:

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STOCHASTIC DYNAMICS FOR NONEQUILIBRIUM SOLUTE DISTRIBUTION AT SOLID-LIQUID INTERFACE

CHEN Changle;LU Fuyi (Northwestern Polytechnical University; Xi'an 710072)

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CHEN Changle;LU Fuyi (Northwestern Polytechnical University; Xi'an 710072). STOCHASTIC DYNAMICS FOR NONEQUILIBRIUM SOLUTE DISTRIBUTION AT SOLID-LIQUID INTERFACE. Acta Metall Sin, 1997, 33(5): 455-460.

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Abstract The solute distribution at the S/L interface is studied with stochastic dynamics. A general fuction relation between the solute distribution coefficient K and time t is given. The deviation of K from K0 (t→∞, K=K0) at the time t, being greater than the thermal equilibrium relaxation time ξ and smaller than the structural equilibrium relaxatin time ξ0, is also discussed. It has come to the conclusion that the deviation of K from K0, in K/K0, increases with increasing superheating temperature. This is in agreement with the result of experiment.

Key words: binary system solute distribution nonequilibrium relaxation time

Received: 18 May 1997

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1997/V33/I5/455

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