F Adjei-Kyeremeh, C K Akuata, N Bansal, S Zischke, I Raffeis, A B Polaczek
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引用次数: 0
Abstract
The high strength and lightweight benefits of Al-Cu-Li alloys make them attractive for aerospace applications. The major strength contributing phase is the T1(Al2CuLi) phase. Although extensive reporting is known on its nucleation behaviour and structure in conventional T1 microstructures, little is known for additive manufacturing (AM). This work focusses on the comparative characterisation of T1 phase (structure, nucleation behaviour) in conventional (2099-T83), Powder Bed Fusion (PBF-LB/M) and Direct Energy Deposition (DED-LB/M) AA2099 microstructures. It is shown that with different AM processes and heat treatments, different T1 microstructures are achievable.
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