Authors:
Fenja Habelmann (1,2), Saeed Khademzadeh (2), Arvid Svanberg (2), Anna Larsson (3), Seyed Behnam Hosseini (2)
1- University of Rostock, Germany
2- Department of Manufacturing Processes, RISE Research Institutes of Sweden, Mölndal, Sweden
3- Höganäs AB, Höganäs, Sweden
Abstract:
While laser powder bed fusion (PBF-LB) technology holds significant promise for integration into industrial manufacturing workflows, it still faces challenges related to low production rates. Adjusting process parameters, such as increasing layer thicknesses and scanning speeds, proves effective and cost-efficient in enhancing productivity in the PBF-LB process. However, ensuring the retention of appropriate properties poses challenges, which necessitate further studies. Another obstacle arises from the elevated energy input required to accommodate increased layer thicknesses, leading to a higher level of spatters. This study examines the feasibility of enhancing productivity in PBF-LB for IN718 components using this approach, encompassing both bulk samples and inclined features. The investigation includes various material responses, including relative density, surface roughness, microstructure, and spatter formation. Optimal process parameters have been determined for different layer thicknesses, extending up to 120 μm, with corresponding adjustments tailored for downfacing surfaces.
DOI:
https://doi.org/10.59499/EP246281718
