Abstract Scope |
Powder bed fusion (PBF) additive manufacturing has been widely used for producing high-performance AlSi10Mg alloy parts with complex geometries, such as lattice structures, curved surfaces, etc. In this paper, we investigated the effects of curvature on the surface finish, geometrical deviation, and microstructures of the PBF-built AlSi10Mg sample with a sinusoidal curved surface. Specifically, profile surface roughness Ra and surface texture attributes Sa, Spc, Sk, Vmc were used to represent the surface finish. In addition, a three-dimensional point cloud was generated to characterize the geomatical deviations. Meanwhile, the as-built parts exhibited the primary α-Al phase and eutectic Al/Si phase, and the grain cell size and morphology changed with the varied curvatures. Herein, the smallest grain with more equiaxed morphology could be observed at the curvature C3 due to the largest nucleation density. The curvature-geometrical performance-microstructure relationship of the PBF-built AlSi10Mg parts with curved surface was systematically uncovered in this paper. |