Thermodynamics of Heterogeneous Nucleation of Liquid Iron in Solidification

HUANG Cheng; SONG Bo; MAO Jinghong; ZHAO Pei

doi:10.13374/j.issn1001-053x.2003.02.007

Volume 25 Issue 2

Aug. 2021

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HUANG Cheng, SONG Bo, MAO Jinghong, ZHAO Pei. Thermodynamics of Heterogeneous Nucleation of Liquid Iron in Solidification[J]. Chinese Journal of Engineering, 2003, 25(2): 127-130. doi: 10.13374/j.issn1001-053x.2003.02.007

Citation:

HUANG Cheng, SONG Bo, MAO Jinghong, ZHAO Pei. Thermodynamics of Heterogeneous Nucleation of Liquid Iron in Solidification[J]. Chinese Journal of Engineering, 2003, 25(2): 127-130. doi: 10.13374/j.issn1001-053x.2003.02.007

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Thermodynamics of Heterogeneous Nucleation of Liquid Iron in Solidification

doi: 10.13374/j.issn1001-053x.2003.02.007

1. Metallurgy School, University of Science and Technology Beijing, Beijing 100083, China;
2. Material Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China;
3. Central Iron and Steel Research Institute, Beijing 100081, China

Received Date: 2002-05-23
Available Online: 2021-08-17

Abstract

Abstract

By using of electrolytic pure iron, the specimen containing different heterogeneous nucleus and contents were made in an Mo wire furnace. The DTA method was employed to measure the undercooling of liquid iron during solidification. Equations to calculate the change of Gibbs free energy of solid and liquid iron in solidification were reviewed theoretically. Calculations were performed to obtain Gibbs free energy difference between solid and liquid, critical radius of nucleus and the activation energy in solidification.
- pure iron,
- activation energy,
- critical radius,
- undercooling