|About this Abstract
||Materials Science & Technology 2019
||Additive Manufacturing of Metals: Microstructure and Material Properties of Nickel-based Alloys
||High Temperature Air Oxidation Behavior of Hastelloy X Processed by Electron Beam Melting (EBM) and Selective Laser Melting (SLM).
||Marie Romedenne, Sebastien Dryepondt, Rishi Pillai
|On-Site Speaker (Planned)
Additive manufacturing (AM) aim to complement or replace conventional and costly machining or production processes. While the current focus is on the evaluation of mechanical properties of as fabricated or heat-treated materials, the oxidation behavior of AM materials is rarely investigated. The oxidation behavior of two Hastelloy X variants: one fabricated by EBM with different Si and Mn contents and the other processed with SLM was evaluated and compared with the wrought Hastelloy X. Thermogravimetric analyses during 100 h exposure at 950 °C and furnace exposures at 950 °C for durations up to 5000 h were performed. The oxidation behavior was characterized as a function of the microstructure and composition of the alloy. The oxidations kinetics were similar between the wrought alloy and the one processed by EBM and SLM. However, spalling occurred and appeared to be detrimental for the mechanical integrity of the specimens.
||Planned: At-meeting proceedings