Dendritic to globular morphology transition in ternary alloy solidification

2005/01/20 by Denis Danilov, Britta Nestler
Physics and Astronomy · #cond-mat.mtrl-sci

paper · pdf · doi:10.1103/physrevlett.93.215501

published as Phys. Rev. Lett. 93, 215501 (2004) · 4 pages, 2 figures

arxiv created 2005/01/20 · arxiv updated 2009/12/01

Abstract

The evolution of solidification microstructures in ternary metallic alloys is investigated by adaptive finite element simulations of a general multicomponent phase-field model. A morphological transition from dendritic to globular growth is found by varying the alloy composition at a fixed undercooling. The dependence of the growth velocity and of the impurity segregation in the solid phase on the composition is analyzed and indicates a smooth type of transition between the dendritic and globular growth structures.

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