| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
The Influence of Stoichiometry on the Reaction Behavior of Ni/Al Reactive Multilayers |
| Author(s) |
Nensi Toncich, Rebecca Anne Gallivan, Fabian Schwarz, Jemma Eloise Gillon, Tina Curtins, Ralph Spolenak |
| On-Site Speaker (Planned) |
Nensi Toncich |
| Abstract Scope |
Reactive multilayers (RMLs) are metastable materials with notable thermal, chemical, and mechanical properties. Their capacity for self-sustained, high-temperature exothermic reactions, driven by the low free energy of the products, makes them valuable for applications in joining processes and microelectronics. This study aims to fine tune Ni/Al RMLs by investigating stoichiometric effects on their reaction behavior and phase formation. Additionally, we expand the range of Ni/Al stoichiometries studied to provide new understanding of multilayer system behavior. The microstructure and mechanical properties of deposited systems, and phase transformations, are analyzed using X-ray diffraction, atom probe tomography, nanomechanical testing, and scanning transmission electron microscopy. Additionally, high-speed IR imaging is used to examine the evolution of reaction kinetics and peak temperatures upon ignition. The experimental results are complemented by Molecular Dynamics simulations, offering additional insights at the atomistic level. These findings are fundamental for designing Ni/Al RMLs with customized reaction behavior and phase characteristics. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Other, Other |