| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Progress towards Understanding the Synthesis and Behavior of Metals Far from Equilibrium: A SMD Symposium Honoring Enrique Lavernia on the Occasion of His 60th Birthday
|
| Presentation Title |
High-strength and Thermal Stability of Nanotwinned Al Alloys |
| Author(s) |
Qiang Li, Sichuang Xue, Yifan Zhang, Jian Wang, Haiyan Wang, Xinghang Zhang |
| On-Site Speaker (Planned) |
Xinghang Zhang |
| Abstract Scope |
Lightweight Al alloys show widespread applications, but are subjected to limitations, such as inherently low strength and low service temperature. Age hardened Al alloys have mechanical strength less than ~ 700 MPa and readily experience grain growth at low homologous temperature. We have used far-from-equilibrium approach to fabricate various Al solid solution alloys. Some of the selected Al alloys have flow stresses exceeding 1.5 GPa, making them one of the strongest Al alloys. Our in situ studies show that the nanotwinned Al alloys possess obvious anisotropy under both tension and compression tests in SEM microscope. The solid solution Al alloys have superb thermal stability and mechanical stability at elevated temperatures. These studies shed light on the design of lightweight high strength Al alloys in harsh environment. |
| Proceedings Inclusion? |
Undecided |