| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Deformation Behavior of Aluminum Alloys Deposited by Laser Hot-wire Manufacturing |
| Author(s) |
Gerry L. Knapp, Maxim Gussev, Amit Shyam, Thomas Feldhausen, Alex Plotkowski |
| On-Site Speaker (Planned) |
Gerry L. Knapp |
| Abstract Scope |
Laser hot-wire additive manufacturing (AM) heats a wire via Joule heating before fully melting it with a laser beam to form a part. Here, we apply this AM technique to aluminum alloys, which are sensitive to heat accumulation during multi-layer fabrication due to their low melting temperature. To understand the deposited alloy's deformation, tensile testing was done with digital image correlation. Characterization of the microstructure in the deformed specimens by scanning electron microscopy, optical microscopy, and electron backscatter diffraction was correlated with the transient local strain data from the tensile tests. The deformation was shown to be localized in the melt pool boundary regions, which correlated with variation in the microstructure morphology of the melt pool boundary regions. These results will be discussed in terms of the microstructure-property relationships of as-built aluminum alloys. This work was supported by the U.S. Department of Energy Vehicle Technology Office Lightweight Metals Core Program. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, Characterization |