|About this Abstract
||Materials Science & Technology 2019
||Additive Manufacturing of Metals: Microstructure and Material Properties of Nickel-based Alloys
||The Heat Treatment for Nickel-base Superalloy Fabricated by Laser-powder Bed Fusion (L-PBF) Additive Manufacturing (AM)
||Hyeyun Song, Paul Boulware, Rodrigo Enriquez, Heimdall Mendoza, Alber Sadek
|On-Site Speaker (Planned)
Nickel-base superalloy, INCONEL® alloy 718, builds are fabricated by Laser-Powder Bed Fusion (L-PBF) additive manufacturing (AM). Even though AM is an excellent process to fabricate complex shaped products, they still need the post heat treatment to improve mechanical properties. The as-build cubes are heat treated with both conventional heat treatment used for wrought condition and modified heat treatment process. The microstructure is investigated by optical microscopy and scanning and transmission electron microscopy. Hardness measurement and tensile test are performed for both conventional heat-treated and modified heat-treated cubes. The fracture surfaces are analyzed by fractography. The modification of heat treatment for INCONEL 718 fabricated by L-PBF AM indicates the improvement of mechanical properties compared to the conventional heat treatment. Hence, the optimized post heat treatment is proposed for the INCONEL® alloy 718 produced by L-PBF AM.
||Planned: At-meeting proceedings