|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Frontiers in Solidification Science and Engineering
||Investigating Nucleation Phenomena and Equilibrium/Non-equilibrium Phases in Rapid Solidification of Binary Al-Cu Alloys
||Avik Mahata, Mohsen Asle Zaeem, Michael Baskes
|On-Site Speaker (Planned)
The two-phase solid–liquid coexisting structures and rapid solidification of aluminum-copper (Al-Cu) binary alloys are studied by molecular dynamics (MD) simulations using the second nearest-neighbor (2NN) modified-embedded atom method (MEAM) potential. For this purpose, the 2NN-MEAM potential parameters for Al-Cu are developed. Solid–liquid coexistence approach is used to determine the melting point, expansion in melting, latent heat, and the liquid structure factor at some specific compositions. In addition, the solid–liquid interface free energy and surface anisotropy of the elements are determined from the interface fluctuations, and the predictions are compared to the results available in the literature. Crystal nucleation in rapid solidification is studied, and a few equilibrium and non-equilibrium phases are observed during rapid quenching. Physical properties of these phases are calculated by MD simulations, and non-equilibrium phase diagrams are constructed for rapid quenching.
||Planned: Supplemental Proceedings volume