| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nanostructured Materials in Extreme Environments III
|
| Presentation Title |
Deformation Behaviors and Microstructure Evolution of Al/Ti Nano Laminates at Elevated Temperatures |
| Author(s) |
Yifan Zhang, Ruizhe Su, Nicholas A. Richter , Tongjun Niu, Xuanyu Sheng, Haiyan Wang, Xinghang Zhang |
| On-Site Speaker (Planned) |
Yifan Zhang |
| Abstract Scope |
This work presents the mechanical properties and microstructure evolution of Al/Ti nano laminates at elevated temperatures. The hardness and modulus of Al/Ti 4.5 nm and 22 nm nano laminates evolve differently with annealing temperatures because of their distinct microstructures. Moreover, Al/Ti nano laminates with different layer thicknesses (h) behave dissimilarly under in situ micropillar compressions at elevated temperatures. Increasing the testing temperature can lead to softening in Al/Ti 22 nm (h = 22 nm) nano laminate but hardening in Al/Ti 4.5 nm nano laminate. Noticeably, Al/Ti 4.5 nm nano laminate has the high flow stress of ~ 2.8 GPa, and good deformability at the testing temperature of 300 ◦C. Post-deformation analyses show the deformation induced Al/Ti intermixing on the deformed pillar top, and the good co-deformability among Ti, Al and TiAl layers. This study can facilitate the design of strong and light-weight metallic materials for high-temp applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Characterization, Mechanical Properties |