About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Materials Design and Alloy Development V – Design Fundamentals
|
Presentation Title |
Design of an Aluminum Alloy Based on Stable Nanoparticles for Eliminating Process Instability in Laser Metal Additive Manufacturing |
Author(s) |
Minglei Qu, Qilin Guo, Luis Izet Escano, Ali Nabaa, S. Mohammad H. Hojjatzadeh, Lianyi Chen |
On-Site Speaker (Planned) |
Minglei Qu |
Abstract Scope |
The process instabilities intrinsic to the localized laser-powder bed interaction cause the formation of various defects in laser powder bed fusion additive manufacturing process. Conventional material design strategy for additive manufacturing relies on modifying the element composition based on the phase diagram to enhance the strength or ductility without considering the intrinsic process instability problem. Here we report a unique material design method of adding TiC nanoparticles in Al6061 powders to control the intrinsic process instability and eliminate the large spatters, resulting in 3D printing of defect lean sample with good consistency and enhanced properties. The nanoparticle-induced elimination of large spatters is attributed to: (1) nanoparticle-enabled control of molten pool fluctuation eliminates the liquid breakup induced large spatters; (2) nanoparticle-enabled control of the liquid droplet coalescence eliminates liquid droplet colliding induced large spatters. Our research may guide the development of feedstock material design to achieve defect lean metal additive manufacturing. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Aluminum, Composites |