|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Surface Engineering IV
||Intermetallic Formation in High-temperature Al/Ni Wetting: A Molecular Dynamics Study
||Ensieh Yousefi, Youqing Sun, Anil Kunwar, Muxing Guo, Nele Moelans, David Seveno
|On-Site Speaker (Planned)
Wetting process at high temperatures is an inherently complex mechanism that requires nanoscale study for better understanding. Molecular dynamics simulations were therefore performed to investigate the spreading process of a liquid Aluminum droplet on solid Nickel substrate at 1023.15 K. As revealed from the Aluminum-Nickel phase diagram, the reactions between Aluminum and Nickel result in the formation of various intermetallics depending on the temperature and composition. The structure of each intermetallic compound was studied separately. The interfacial reaction products in the spreading were identified by benchmarking their properties with intermetallics outlined in the Aluminum-Nickel phase diagram. The spreading was fast at the very beginning and no intermetallics were detected. As the wetting time progresses, the spreading rate decreased and Aluminum richer intermetallics formed but gradually transformed into Nickel richer intermetallics. At the end, Al3Ni5 and AlNi3 were the dominant intermetallics in the substrate while AlNi was found in the droplet.
||Modeling and Simulation, Aluminum, Characterization