About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
Capturing the Undercooling for Solidification of Inoculated FCC Metals |
Author(s) |
Mark R. O'Masta, Eric Clough, John Hunter Martin |
On-Site Speaker (Planned) |
Mark R. O'Masta |
Abstract Scope |
Inoculation of metals and alloys to promote heterogeneous nucleation for controlled grain structure and size is widely used from casting to additive manufacturing. This talk presents a computation study investigating the thermodynamic factors controlling incipient solidification on lattice mismatched substrates. Molecular dynamic (MD) simulations analyze the nucleation of FCC metals, and strain relief mechanisms that can substantially reduce the required undercooling for heterogeneous nucleation [1]. Energy based calculations are used to analyze prominent relief mechanisms, and their implications on nucleant potency and selection. The talk will be motivated by recent results from a combinatorial study, using selective laser melting (SLM), of aluminum functionalized with foreign particles [2].
[1] O’Masta, M.R., et al. Comput. Mater. Sci. 192 (2021): 110317. https://doi.org/10.1016/j.commatsci.2021.110317.
[2] Martin, J.H., et al. Acta Mat. 200 (2020): 1022–37. https://doi.org/10.1016/j.actamat.2020.09.043. |
Proceedings Inclusion? |
Planned: |
Keywords |
Solidification, Modeling and Simulation, Aluminum |