About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2026 – A Memorial to Todd Leonhardt
|
| Presentation Title |
Microstructure and Interfacial Evaluation of Solid-State Diffusion Bonded Ti2AlC and a Molybdenum Alloy using Spark Plasma Sintering |
| Author(s) |
Jack Summers, Samuel Molina, Miladin Radovic, Ibrahim Karaman |
| On-Site Speaker (Planned) |
Jack Summers |
| Abstract Scope |
Titanium Zirconium Molybdenum (TZM) alloy is a Molybdenum-based refractory alloy, utilized for its high working temperature and high strength even at temperatures higher than 1000°C. However, oxidation of TZM at elevated temperatures severely limits its operating range outside of controlled environments. In this study, pressure-assisted diffusion bonding between the Ti2AlC MAX phase ceramic and TZM was conducted using spark plasma sintering to assess the potential of a multifunctional MAX phase coating on a refractory alloy. Experiments were conducted at various temperatures, pressures, holding times, and cooling rates which were aimed to provide the diffusion kinetics of the newly formed interface between the parent materials. Electron microscopy and chemical analysis indicate the formation of a multilayered interface with compositionally distinct reaction subregions. Furthermore, the possible diffusion mechanisms and reactions are proposed. Changes in interfacial hardness during reaction layer formation were explored via nanoindentation mapping as compared to both parent materials. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Joining, Ceramics, Surface Modification and Coatings |