Dendritic to globular morphology transition in ternary alloy solidification

Details Dendritic to globular morphology transition in ternary alloy solidification Dendritic to globular morphology transition in ternary alloy solidification

2005-01-20

arxiv.org/abs/cond-mat/0501494v1

Phys. Rev. Lett. 93, 215501 (2004)

Physics

Condensed Matter

Materials Science

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.93.215501

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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