|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||CFD Modeling and Simulation in Materials Processing
||Modeling the Multicomponent Columnar-to-Equiaxed Transition of Alloy 625
||Kyle Fezi, Matthew J.M. Krane
|On-Site Speaker (Planned)
A numerical model has been developed to study morphological effects on macrosegregation for static castings, including grain growth kinetics and solid grain movement. The model solves continuum equations for mass, momentum, species, and energy conservation during multicomponent solidification. The columnar-to-equiaxed transition (CET) model is used to examine the effect of having free-floating equiaxed grains in the center of a casting. The model is also used to explore the effect of CET on macrosegregation of nickel alloy 625. The location of the CET of alloy 625 is affected by changing the thermal boundary conditions, the free-floating equiaxed particle diameter, and the possible number of heterogeneous nucleation sites. The model is also compared to experimental results to show the models capabilities and limitations.
||Planned: A print-only volume