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Micromodeling of the Diffusion‐Controlled Equiaxed Peritectic Solidification
Author(s) -
Burbelko Andriy,
Początek Jacek,
Gurgul Daniel,
Wróbel Marek
Publication year - 2014
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201300174
Subject(s) - equiaxed crystals , materials science , austenite , ferrite (magnet) , diffusion , thermodynamics , metallurgy , alloy , microstructure , composite material , physics
Principles of the statistical solidification theory are used for the mathematical formulation of the micro‐diffusion field modeling during the equiaxed grain growth controlled by diffusion. It is proposed to use the Averaged Voronoi Polyhedron concept for the representation of the domain of elementary diffusion field. This approach is applied for the peritectic transformation modeling with the assumption of a partial mixing of the intercrystalline liquid phase. The results of the evolution of the volume fractions of the liquid, austenite, and ferrite phases during primary solidification and the peritectic transformation simulation are presented as well as carbon concentration distribution along the grain radius in the ferrite and liquid phase at the instant of initiation of the peritectic solidification and in the austenite at the moment of peritectic solidification termination.