The localized heat input during laser powder bed fusion (PBF-LB) additive manufacturing creates unique thermal histories resulting in distinctive residual stress distributions and microstructures that affect fatigue performance. This study examines the relationship between geometrical features and residual stresses in 316L stainless steel components with topology-optimized geometries such as Y-struts and various node shapes.

austenitic stainless steel, geometry, laser beam powder bed fusion, mechanical properties, microstructure, residual stress analysis, ultrasound phase spectroscopy
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2025
ASM International
Topics
Microstructure Austenitic stainless steel Residual stress analysis Powder bed fusion Mechanical properties
Issue Section:
Residual Stress Measurement