About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Aluminum Alloys, Characterization and Processing
|
Presentation Title |
Nanoparticle-enhanced Arc Welding of Aluminum Alloys |
Author(s) |
Narayanan Murali, Xiaochun Li |
On-Site Speaker (Planned) |
Narayanan Murali |
Abstract Scope |
Arc welding high strength aluminum alloys is a great challenge due to characteristic defects upon melting and re-solidification. However, it is an economical method by which these important engineering alloys can be processed. An emerging metallurgical technique known as nano-treating has seen increasing use in tandem with classical metallurgy, with the latest advances being presented here. Incorporating a small volume fraction of nanoparticles into the welding process significantly alters associated structure/processing/property relationships and enables the joining of difficult-to-weld aluminum alloy systems. From a structural perspective, nanoparticles disallow the formation of dendrites and attenuate large secondary phases that are seen in conventional arc welding, thus eliminating hot cracking. The microstructural evolution that nanoparticles permit along with traditional strengthening mechanisms elevates the performance of the weld over its traditional barriers. Thus, the nano-treating approach paves the way for new possibilities in arc welding high-strength aluminum alloys and other “unweldable” systems. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, Joining, |