About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Optimizing Cu-Ti Alloys for Superior Strength and Conductivity Using a Combinatorial Strategy |
| Author(s) |
Rohit Berlia, Zhaosen Qu, Yucheng Sun, Rayna Mehta, Timothy P Weihs |
| On-Site Speaker (Planned) |
Rohit Berlia |
| Abstract Scope |
Cu–Ti alloys possess a combination of high strength and electrical conductivity, making them attractive for advanced electronic applications compared to other Cu alloys. These properties are governed by the microstructural evolution of Cu₄Ti precipitates, which in turn depend on Ti concentration and thermal processing. In this study, we investigate the microstructure–property relationships in 200 μm thick freestanding Cu–Ti foils fabricated via sputter deposition, with compositions ranging from 1 to 7 at% Ti. All foils were solutionized, quenched, and subsequently aged at 400 °C or 600 °C to obtain a wide range of volume fractions of the Cu₄Ti phase in both tetragonal and orthorhombic structures. Precipitate nucleation and growth behavior were characterized using transmission X-ray diffraction and electron microscopy, and correlated with changes in electrical resistivity and mechanical properties. The results provide insights into optimizing aging conditions and composition to achieve a favorable balance between strength and conductivity. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Characterization, Phase Transformations |