| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
| Presentation Title |
Alternative Scan Strategies for Laser Powder Bed Additive Manufacturing to Expand Process Space |
| Author(s) |
Elizabeth Chang-Davidson, Nicholas Jones, Jack Beuth |
| On-Site Speaker (Planned) |
Elizabeth Chang-Davidson |
| Abstract Scope |
Metals additive manufacturing is an emerging field in manufacturing, in which one commonly used technology is laser powder bed fusion (L-PBF). Melt pool sizes in L-PBF are closely tied to printed part material properties, but are currently limited by keyholing porosity flaws or by machine limits on laser power and velocity. For carefully selected process parameters, much larger than typical melt pools were created by rapidly scanning the laser back and forth across a constant width. A systematic way to apply this technique was mapped across laser power and velocity using semi-analytical simulation software. Sample single stripes and cubes were printed using parameters selected to span process space in power and velocity. These experimental results were used to calibrate the simulations and demonstrate viability of the technique. This systematically applicable technique increases the range of melt pool sizes and therefore range of material properties possible to print using L-PBF machines. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Titanium |