|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing Fatigue and Fracture: Developing Predictive Capabilities
||Mechanism-based Characterization of the Mechanical Behavior of PBF-EB Manufactured IN718 Lattice Structures
||Daniel Patrick Kotzem, Tizian Arold, Thomas Niendorf, Frank Walther
|On-Site Speaker (Planned)
||Daniel Patrick Kotzem
Based on the layer-by-layer manufacturing, additive manufacturing offers various possibilities for the design of new lightweight constructions. On the way to a reliable application within safety-relevant components, the deformation and damage behavior, especially under cyclic loading, have to be understood in detail.
Within this work, the mechanical behavior of electron beam powder bed fusion (PBF-EB) Inconel 718 (IN718) lattice structures is characterized. Computer tomographic scans are conducted in order to quantify the present defect density, the process-induced surface roughness and the nominal cross section. The material’s fatigue behavior is investigated by means of coupled multiple and constant amplitude tests at fully-reversed loading using various measuring techniques such as digital image correlation (DIC), infrared camera, and direct current potential drop system (DCPD). Based on the results, a good correlation between the measurement techniques could be highlighted which can be linked to the specific material reactions.
||Additive Manufacturing, Mechanical Properties, High-Temperature Materials