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Meeting MS&T23: Materials Science & Technology
Symposium Multi Scale Modeling of Microstructure Deformation in Material Processing
Presentation Title Modeling Microstructure Evolution for Solidification During Additive Manufacturing Using Cellular Automata
Author(s) Indranil Roy, John S Coleman, Matt R Rolchigo, Alex Plotkowski, Shuanglin Chen, Ying Yang
On-Site Speaker (Planned) Indranil Roy
Abstract Scope Mechanical properties of alloys depend on the microstructural features such as the fraction of different phases, size, and distribution of dendrites and eutectic phases, and spatial distribution of alloying elements. While it is possible to design heat treatment to modify microstructure, therefore controlling the mechanical properties up to a certain extent, the as solidified microstructure plays a very important role in defining such properties. We have developed a Cellular Automata-based approach that allows us to model microstructure evolution for alloys. The dendrite and eutectic growth models are validated with analytical LGK and Jackson-Hunt models respectively. Our modeling suggests that by increasing the cooling rate, a hypoeutectic alloy will have a larger eutectic volume fraction compared to a large dendritic microstructure that is observed for solidification through slow cooling. Our goal is to model and experimentally validate the eutectic couple zone which is crucial in the alloy designing process.


A New Die Design for the Constrained Groove Pressing Process to Achieve Homogeneity and Uniform Properties
An Experimental and Modeling Study of Vacancy Diffusion Creep and Segregation in Multicomponent Alloys
Fine-tuning Superelastic Behavior of NiTi SMAs via Nanoscale Concentration Modulation Created by Ni4Ti3 Nanoprecipitate Dissolution
K-2: Data Transfer Methods in the Coupled Random Cellular Automata Finite Element Model of Dynamic Recrystallisation
K-5: Assessment of the Elastic Properties of FeMnNiCoMo System Based on the Nanoindentation Measurements and Molecular Dynamic Simulations
Modeling Microstructure Evolution for Solidification During Additive Manufacturing Using Cellular Automata

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