|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Environmental Degradation of Additively Manufactured Alloys
||High-temperature Oxidation Behavior of Additively Manufactured Haynes 282 Samples in Direct-fired Supercritical CO2 Power Cycle Environments
||Casey Carney, Nicholas Lamprinakos, Richard Oleksak, Omer Doğan, Anthony Rollett
|On-Site Speaker (Planned)
Materials selection is a key concern for corrosion resistance in elevated temperature and pressure direct-fired supercritical CO2 (sCO2) power cycles. Additive manufacturing (AM) is investigated to construct compact heat exchangers with complex geometry for these power cycles. Haynes 282 (H282) coupons manufactured using various laser powder bed fusion process parameters were exposed to direct-fired sCO2 conditions (95CO2 – 4H2O – 1 O2, 20 MPa) at both atmospheric pressure (T=850 °C) and supercritical pressure of 20 MPa (T=750 °C) for more than 2,000 hours. The oxidation behavior of AM H282 with both as-printed and ground surfaces will be contrasted with the behavior of wrought H282, so that the feasibility of the use of AM production methods of components for direct-fired sCO2 power cycles can be assessed.