Pattern Stability and Trijunction Motion in Eutectic Solidification
S. Akamatsu, M. Plapp, G. Faivre, A. Karma
Abstract
We demonstrate by both experiments and phase-field simulations that lamellar eutectic growth can be stable for a wide range of spacings below the point of minimum undercooling at low velocity, contrary to what is predicted by existing stability analyses. This overstabilization can be explained by relaxing Cahn's assumption that lamellae grow locally normal to the eutectic interface.
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