|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing for Energy Applications IV
||J-17: Understanding Process-structure-property Linkages in Electron Beam Melted Haynes 282
||Avantika Gupta, Sriram Vijayan, Joerg Jinschek, Carolin Fink
|On-Site Speaker (Planned)
Haynes-282 is a precipitation strengthened Ni based superalloy, which finds major applications in gas turbine engines. Excellent high temperature properties and weldability makes this alloy a promising candidate to fabricate near-net shaped parts via electron beam melted powder bed fusion processes (EBM). However, the development of new qualification standards for EBM Haynes 282 requires a systematic understanding of process-structure-property (PSP) space.
In this study, a high throughput framework is used to understand PSP linkages in electron beam melted Haynes-282. Scanning electron microscopy is used to evaluate variations in size/morphology of γ’ and the carbides with build height and thickness. Further, evolution of carbide type and composition with build height is investigated using energy dispersive x-ray spectroscopy. Micro-hardness data is used to map the effects of microstructural variations on hardness. The quantified results are correlated to initial process parameters in EBM, to understand the microstructural evolutions and establish PSP relationships.
||Additive Manufacturing, Characterization, High-Temperature Materials