Three-dimensional phase field modeling of columnar to equiaxed transition in directional solidification of Inconel 718 alloy
نویسندگان
چکیده
منابع مشابه
Phase-field formulation for quantitative modeling of alloy solidification.
A phase-field formulation is introduced to simulate quantitatively microstructural pattern formation in alloys. The thin-interface limit of this formulation yields a much less stringent restriction on the choice of interface thickness than previous formulations and permits one to eliminate nonequilibrium effects at the interface. Dendrite growth simulations with vanishing solid diffusivity show...
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A three-phase model for mixed columnar-equiaxed solidification was recently developed. The most critical features, necessary for modelling the macrosegregation, were considered: the progressive growth of the columnar dendrite trunks from the ingot surface, the nucleation and growth of the equiaxed crystals including the motion of the equiaxed crystals, the thermal and solutal buoyancy flow and ...
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Article history: Received 8 September 2014 Received in revised form 20 January 2015 Accepted 28 January 2015 Available online 3 February 2015
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A macroscopic model of Columnar-to-Equiaxed Transition (CET) formation is presented. The growth of a columnar zone and an equiaxed zone are treated separately and modeled on a fixed grid. The model uses a columnar Front Tracking (FT) formulation to compute the motion of the columnar front and the solidification of the dendritic columnar mushy zone. The model for the equiaxed zone calculates the...
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ژورنال
عنوان ژورنال: Journal of Crystal Growth
سال: 2020
ISSN: 0022-0248
DOI: 10.1016/j.jcrysgro.2020.125879