About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Frontiers in Solidification X
|
| Presentation Title |
Modeling and Experimental Validation of Morphological Transitions During Rapid Solidification of Ag–Cu Alloys |
| Author(s) |
Drew Cietek, Rainer Hebert |
| On-Site Speaker (Planned) |
Drew Cietek |
| Abstract Scope |
The silver–copper binary system has long served as a model alloy for studying non-equilibrium solidification phenomena. This study revisits the system to investigate morphology transitions through a combined computational and experimental approach. Building on prior work that quantified the range of uncertainty in key thermophysical properties, representative median values are applied in a novel calculation sequence that uses composition-specific inputs, including nonlinear solidus and liquidus behavior. Using the full set of undercooling assumptions, interface temperatures are estimated and used to update all relevant temperature-dependent inputs prior to calculating a second iteration of the radius–velocity relationship. Experimental validation is conducted through laser-based line-scan experiments on compositionally verified arc-melted silver–copper buttons. By varying scan speeds, distinct solidification morphologies are generated for comparison with model outputs. The validity of simplified assumptions, such as constant diffusion speed across compositions, is then evaluated. This integrated approach strengthens transition criteria and informs future multicomponent alloy modeling. |
| Proceedings Inclusion? |
Planned: |