About this Abstract |
Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
Presentation Title |
Effect of Heat Treatment on the Microstructure and Mechanical Properties of Monel K500 Alloy Fabricated via L-PBF and LP-DED |
Author(s) |
Indrajit Nandi, Seyed Ghiaasiaan, Nabeel Ahmad, Paul R. Gradl, Shuai Shao, Nima Shamsaei |
On-Site Speaker (Planned) |
Nabeel Ahmad |
Abstract Scope |
This study examines and compares the effects of different heat treatments on microstructure and mechanical properties of additively manufactured (AM) Monel K500 alloy fabricated using laser powder bed fusion (L-PBF) and laser direct energy deposition (LP-DED) technologies. The as-fabricated AM Monel K500 specimens displayed dendritic microstructure and elemental micro-segregation, due to high cooling rates induced during AM fabrication process, which differs significantly from its wrought counterparts. Applicability of standard heat treatments (HT) proposed in literature for wrought material was validated for the AM Monel K500 alloy using multi-step HT such as hot isostatic pressing, solution annealing, and different aging processes. The mechanical properties of test specimens were evaluated using uniaxial tensile and fatigue testing at room temperature. Microstructural evolution of the test specimens during HT was analyzed using scanning electron microscope. The mechanical properties of the L-PBF and LP-DED test specimens were discussed and compared in various heat treatment conditions. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |