|About this Abstract
||Materials Science & Technology 2019
||Additive Manufacturing of Metals: Microstructure and Material Properties of Nickel-based Alloys
||Effect of Intra-build Location and Loading Direction on Quasi-static and Dynamic Response of Additively Manufactured Inconel 718
||Nadia Kouraytem, Raphael A. Chanut, Dillon S. Watring, Owen T. Kingstedt, Ashley D. Spear
|On-Site Speaker (Planned)
This study investigates the effect of intra-build location and loading direction on quasi-static (uniaxial compression) and dynamic (split-Hopkinson pressure bar) mechanical response within the same build for a large, selective laser melted, Inconel 718 bulk volume produced using manufacturer-recommended processing parameters. Electron backscatter diffraction measurements were collected on representative specimens extracted along the three principal processing directions within the build domain to correlate microstructural features to observed location-specific mechanical deformation. Results show that the recommended printing parameters exhibit a homogeneous mechanical response. Despite the similarity in stress-strain responses among the specimens, their deformed shapes show a systematic and repeatable dependence on the loading direction with respect to the principal direction of the build. The deformation dependence is found to be related to the underlying, process-induced crystallographic texture. This study provides important information for qualifying large, additively manufactured Inconel 718 parts for critical structural applications used in extreme conditions.
||Planned: At-meeting proceedings