A Kinetic Model of Alumina Inclusion Nucleation in Molten Steel

Abstract:

A computational model which is based on the classical homogenous nucleation theory was developed to analyse the alumina inclusion-nucleation process in molten steel in this paper. The idea, 'pseudomolecules', proposed by Lifeng Zhang[1,2], was cited as the basic unit of the physical process of nucleation. However, the nucleation stage was evolved to be controlled by the diffusion of pseudomolecules groups than single pseudomolecule, which is much closer to the actual situation. The differential equations of different pseudomolecules size distribution were given and calculated by computer programs using Runge-Kutta method. Some key parameters, such as supersaturation, nucleation rate, and inclusion population were calculated and compared with some others' conclusion.

• Periodical: Advanced Materials Research (Volumes 476-478)
• Pages: 1275-1280
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.476-478.1275
• Online since: February 2012
• Authors: Shao Bo Zheng, Cun Bo Yang, Dan Zhao, Hui Gai Li
• Keywords: Alumina Inclusion, Nucleation, Nucleation Rate, Pseudomolecules

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