The process of component production has been transformed by additive manufacturing (AM), offering intricate geometries with unprecedented complexity. Laser powder bed fusion (PBF-LB) is a versatile technique for fabricating precise, customized metallic parts. However, rapid solidification during the printing can induce significant anisotropy, affecting microstructure and mechanical properties. Understanding the impact of build orientation and process parameters on AM component properties is crucial for optimization and reliability. Previous studies have shed light on the properties of PBF-LB AlSi10Mg alloy such as the factors influencing mechanical strength, fatigue life, and impact toughness. Current work further examines the influence of print orientation on microstructure and mechanical characteristics when high productivity is used on the manufacturing, analyzing specimens for tensile testing, impact toughness, and fatigue strength. Results reveal correlations between structural anisotropy and mechanical behavior, offering insights for optimizing AlSi10Mg component fabrication.

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Fatigue Strength and Impact Toughness on High Speed Build of PBF-LB AlSi10Mg

  • Timo Rautio,
  • Ahmed Abdelghany,
  • Mikko Hietala,
  • Aappo Mustakangas,
  • Markku Keskitalo,
  • Antti Järvenpää

摘要

The process of component production has been transformed by additive manufacturing (AM), offering intricate geometries with unprecedented complexity. Laser powder bed fusion (PBF-LB) is a versatile technique for fabricating precise, customized metallic parts. However, rapid solidification during the printing can induce significant anisotropy, affecting microstructure and mechanical properties. Understanding the impact of build orientation and process parameters on AM component properties is crucial for optimization and reliability. Previous studies have shed light on the properties of PBF-LB AlSi10Mg alloy such as the factors influencing mechanical strength, fatigue life, and impact toughness. Current work further examines the influence of print orientation on microstructure and mechanical characteristics when high productivity is used on the manufacturing, analyzing specimens for tensile testing, impact toughness, and fatigue strength. Results reveal correlations between structural anisotropy and mechanical behavior, offering insights for optimizing AlSi10Mg component fabrication.