|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing for Energy Applications IV
||J-8: Creep Resistance of Al-Ce Binary Alloys Produced by Casting and Additive Manufacturing
||Jillian Stinehart, Le Zhou
|On-Site Speaker (Planned)
Al-Ce-based alloys have shown promise as next-generation lightweight high temperature aluminum alloys for energy applications. The goal of this study is to explore the creep property and creep deformation mechanisms of Al-Ce alloys. Binary Al-10Ce alloys were manufactured by laser powder bed fusion (LPBF) and casting. Heat treatments including hot isostatic pressing were performed to reduce porosity and determine high temperature microstructural stability. The porosity, eutectic lamellae and grain structure are characterized by microtomography, optical and scanning electron microscope. The as-built alloy consisted of a much finer eutectic lamellar microstructure and showed improved room-temperature strength and ductility compared to the as-cast alloy. Creep resistance was measured in tension and compression at temperatures between 300-400°C. The steady-state creep strain rate and post microstructure were determined to reveal the creep deformation mechanisms. The effect of the eutectic morphology on the creep resistance for LPBF and cast alloys will be compared and discussed.
||Additive Manufacturing, Aluminum, Mechanical Properties