Knowledge of Process-Structure-Property Relationships to Engineer Better Heat Treatments for Laser Powder Bed Fusion Additive Manufactured Inconel 718

24 Oct 2019 Gallmeyer Thomas G. Moorthy Senthamilaruvi Kappes Branden B. Mills Michael J. Stebner Aaron P. Aminahmadi Behnam

Dislocation structures, chemical segregation, {\gamma ^{\prime}, {\gamma ^{\prime \prime}}, {\delta} precipitates and Laves phase were quantified within the microstructures of Inconel 718 (IN718) produced by laser powder bed fusion additive manufacturing (AM) and subjected to standard, direct aging, and modified multi-step heat treatments. Additionally, heat-treated samples still attached to the build plates vs. those removed were also documented for a standard heat treatment... (read more)

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  • APPLIED PHYSICS
  • MATERIALS SCIENCE