Speaker
Description
Laser Powder Bed Fusion (PBF-LB/M) enables the production of highly individualized and geometrically complex components, making it particularly attractive for tooling applications. However, the range of materials that can be processed without cracking remains limited, particularly in the case of tool steels. In this study, the addition of chromium carbides (Cr₃C₂) particles to the hot-work tool steel X40CrMoV5-1 enabled crack-free PBF-LB/M processing. Due to the fine particle size of the carbides, powder segregation occurred during the recoating process, resulting in an inhomogeneous powder-bed composition. To prevent segregation, the carbide particles were bonded to the steel particles using a polymer binder applied via a fluidized bed process. The influence of this modified powder system on the mechanical performance was investigated by means of bending strength and fatigue testing. The results demonstrate the potential of carbide-modified and binder-functionalized powder feedstocks for improving the processability and performance of hot-work tool steels in additive manufacturing.
| Speaker Country | Germany |
|---|---|
| Would you like to publish your paper in the special issue of BHM "Berg- und Hüttenmännische Monatshefte" | No |