About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Beyond the Beam III
|
Presentation Title |
Microstructure Evolution Pathway in Solid-state Additive Manufacturing of Copper |
Author(s) |
Robert J. Griffiths, David Garcia, Hang Yu |
On-Site Speaker (Planned) |
Robert J. Griffiths |
Abstract Scope |
Additive friction stir deposition (AFSD) is a solid-state additive manufacturing technique capable of processing a wide range of metal systems. The process boasts high build rates, full density of deposits, and wrought like mechanical properties of deposited material. The latter of these is due to the microstructures produced, which are generally made up of worked, refined grains. While early investigations highlighted key phenomena resulting in the microstructure evolution of AFSD, these failed to completely describe the material conditions during processing from start-to-finish. Here we utilize a stop-action type experiment to “lock-in” microstructures during the AFSD process. Using these locked depositions and electron back scattered diffraction, the microstructure across the material flow path is described. Several unique features are identified, as well as the identification of discrete thermomechanical regimes across the microstructure evolution pathway in AFSD. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Copper / Nickel / Cobalt, Characterization |