The Study of Undercooling of Homogeneous Nucleation for Metallic Melting

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In this paper, the thermodynamic and kinetic requirements of heterogeneous and homogeneous nucleation of metallic melting were suggested. Based on the kinetic requirements of nucleation, the mathematic model of wetting angle of heterogeneous nucleation was developed, Based on the wetting angel model, it was predicted that the maximum undercooling of homogeneous nucleation for melts is two thirds of melting temperature. With the wetting angel model, the wetting angles of different catalysts in liquid iron were calculated, and calculation results are in agreement with that of other researchers.

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Periodical:

Materials Science Forum (Volumes 561-565)

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Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee

Pages:

1941-1944

Citation:

C. Huang et al., "The Study of Undercooling of Homogeneous Nucleation for Metallic Melting", Materials Science Forum, Vols. 561-565, pp. 1941-1944, 2007

Online since:

October 2007

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$38.00

[5] 18. 3 26. 8 8. 5 36. 5 Conclusions 1) In this paper, the mathematical model of wetting angle of heterogeneous nucleation was developed. The wetting angle of different catalysts in liquid iron were calculated. 2) The undercooling of homogeneous nucleation for melts is two thirds of melting temperature. References.

[1] Hu Hanqi . Fundamentals of metal solidification . Beijing: Mechanical Industry Press,(1991).

[2] Liang Guoxian, etc. Relationships between degree of undercooling in solidification and thermal properties of metals [J]. MATERIALS SCIENCE PROGRESS , 1991, 5 (4): 277~283.

[3] Brucel Bramfitt. The Effect of Carbide and Nitride Additions on the Heterogeneous Nucleation Behavior of Liquid Iron [J]. METALLURGICAL TRANSACTIONS, 1970, Vol. 1: 1987-(1995).

DOI: https://doi.org/10.1007/bf02642799

[4] E.A. Brandes and C.J. Smithells. Metals Reference Handbook[M], 7thed., Butterworth's , 1980: 13-96.

[5] Tetsro Ohashi, Takeshi Hiromoto, Hiromu Fuju, et. al. Effect of Oxides on Nucleation Behavior in Supercooled Iron. Iron and Steel, 1976, (6): 614~623.