Authors:
T.Hajeck (1), C. Weiß (2), C. Broeckmann (1), C. Häfner (2)
1- Institute for Materials Applications in Mechanical Engineering RWTH University, Aachen
2- Fraunhofer Institute for Laser Technology ILT, Aachen
Abstract:
The mechanical properties, especially the strength of a component under cyclic loading, depend on factors such as the chosen material, component geometry and manufacturing history. In Laser Powder Bed Fusion (LPBF), metal powder is deposited and selectively melted using focused laser radiation. The properties of additively manufactured components exhibit a strong dependence on process-related conditions, such as component position and orientation within the build space, or the chosen process parameters. In particular, the density, type and distribution of defects show significant variability depending on parameter selection, which in turn has a notable impact on the mechanical properties of the components. Present work focuses on fatigue strength, as many mechanical components undergo cyclic stress, which is particularly sensitive to internal defects.
DOI:
https://doi.org/10.59499/EP246281349
