Abstract
This paper presents simulations of directional solidification ofmulticomponent alloys using the phase field method. In order to calculatethermodynamic quantities of the alloy, the phase field model has been coupledto multicomponent thermodynamic databases in an `online' mode using theTQ-Interface of the software Thermo-Calc. Simulations of directionalsolidification of several alloys from the Ni-Al-Cr-Co-Ti system arepresented for different pulling speeds. The results predict oscillations ofthe solidification velocity and the element concentrations evolving in thecourse of the initial transient as has been analytically shown for binarysystems. In multicomponent systems these oscillations not only depend on thepulling speed but also on alloy composition.
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More From: Modelling and Simulation in Materials Science and Engineering
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