|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Functional, Energy, and Magnetic Materials
||Inconel-steel Multi-metal-material by Liquid dispersed Metal Powder Bed Fusion: Microstructure, Stress and Property Gradients
||Sabine C. Bodner, L.T.G. van de Vorst, Jakub Zalesak, Juraj Todt, Julius F. Keckes, Verena Maier-Kiener, Bernhard Sartory, Norbert Schell, Jaap Hooijmans, Jaco Saurwalt, Jozef Keckes
|On-Site Speaker (Planned)
||Sabine C. Bodner
Synthesis of functional multi-material hybrid structures represents a serious scientific and technological challenge. In this contribution, liquid dispersed metal powder bed fusion is used to fabricate a multi-metal structure based on alternating 316L stainless steel and Inconel 625 alloy layers. Gradients of phases, residual strains, microstructure, mechanical properties and chemical composition were determined at different length scales within the build-up by the use of cross-sectional synchrotron X-ay diffraction, nanoindentation and transmission electron microscopy. The advanced correlative characterization revealed nano-scaled spherical chromium-metal oxide dispersoids that were formed due to reactive additive manufacturing process. Morphologically sharp stainless steel-Inconel interfaces as well as regions with intermixed alloy’s elements could be realized by adapting the layer stack. Finally, this study shows that liquid dispersed metal powder bed fusion offers the possibility for the synthesis of complex microstructures based on dissimilar metal alloys.