| About this Abstract |
| 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. |