About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Materials Design and Alloy Development IV: Rapid Development
|
Presentation Title |
Towards Scaling Law-based Process Screening in Laser Powder Bed Fusion by Melt Pool Control |
Author(s) |
Theresa Hanemann, Christoph Seyfert, Astrid Rota, Martin Heilmaier |
On-Site Speaker (Planned) |
Theresa Hanemann |
Abstract Scope |
A major drawback to the industrialization of laser powder bed fusion is the comparably small selection of commercially available metals and alloys. With the development of LPBF-adapted compositions processing and according property windows have to be defined for those new alloys. Using scaling laws which relate process parameters to thermophysical material properties enable a fast selection of suitable processing parameters. In this study a modified dimensionless enthalpy equation was correlated with melt pool dimensions of single line scans for four different alloys (In718, 316L, Ti6Al4V, M300). From the boundary conditions on melt pool depth to form a stable and defect free melt pool a common process window could be defined for these alloys. The variation of melt pool dimensions, e.g. surface area to melt volume, within this process window influences the resulting microstructure and thus can be used subsequently to deduce final part properties. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Process Technology, Other |