Modelling precipitation kinetics: Evaluation of the thermodynamics of nucleation and growth

作者: Bastian Rheingans , Eric J. Mittemeijer

DOI: 10.1016/J.CALPHAD.2015.04.013

关键词: Thermodynamic processNucleationFundamental thermodynamic relationThermodynamicsCALPHADChemistryStatistical physicsPrecipitation kineticsWork (thermodynamics)Particle growthThermodynamic equilibrium

摘要: Abstract Modelling of (solid-state) precipitation kinetics in terms particle nucleation and growth requires evaluation the thermodynamic relations pertaining to these mechanisms, i.e. barrier Gibbs–Thomson effect. In present work, frequently occurring problems misconceptions are identified a practical approach with regard kinetic modelling is proposed for combined unified analysis thermodynamics growth, based on fundamental equilibrium consideration particle–matrix system. A computationally efficient method numerical determination presented which allows an easy flexible implementation into modelling.

参考文章(40)
Qing Chen, Johan Jeppsson, John Ågren, Analytical treatment of diffusion during precipitate growth in multicomponent systems Acta Materialia. ,vol. 56, pp. 1890- 1896 ,(2008) , 10.1016/J.ACTAMAT.2007.12.037
Luc Rougier, Alain Jacot, Charles-André Gandin, Paolo Di Napoli, Pierre-Yvan Théry, Damien Ponsen, Virginie Jaquet, Numerical simulation of precipitation in multicomponent Ni-base alloys Acta Materialia. ,vol. 61, pp. 6396- 6405 ,(2013) , 10.1016/J.ACTAMAT.2013.07.018
R. Becker, W. Döring, Kinetische Behandlung der Keimbildung in übersättigten Dämpfen Annalen der Physik. ,vol. 416, pp. 719- 752 ,(1935) , 10.1002/ANDP.19354160806
E. Gamsjäger, A note on the contact conditions at migrating interfaces Acta Materialia. ,vol. 55, pp. 4823- 4833 ,(2007) , 10.1016/J.ACTAMAT.2007.04.050
Clarence Zener, Theory of Growth of Spherical Precipitates from Solid Solution Journal of Applied Physics. ,vol. 20, pp. 950- 953 ,(1949) , 10.1063/1.1698258
W. W. Mullins, Thermodynamic equilibrium of a crystalline sphere in a fluid The Journal of Chemical Physics. ,vol. 81, pp. 1436- 1442 ,(1984) , 10.1063/1.447779
H. I. Aaronson, F. K. LeGoues, An Assessment of Studies on Homogeneous Diffusional Nucleation Kinetics in Binary Metallic Alloys Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 23, pp. 1915- 1945 ,(1992) , 10.1007/BF02647541