|About this Abstract
|2023 TMS Annual Meeting & Exhibition
|Advanced Characterization of High-temperature Alloys: Phase Evolution during Manufacturing and Service-induced Deformation
|Accelerating Alloy Development for Additive Manufacturing
|Elisabeth Kammermeier, Carolin Körner, Christopher H. Zenk
|On-Site Speaker (Planned)
Powder of newly developed compositions for additive manufacturing (AM) is usually unavailable. Two approaches will be presented to (i) mimic selected-electron-melted (SEBM) microstructure formation and evaluate the crack susceptibility, and (ii) produce samples with a suitable microstructure for mechanical testing without the need for powder. For this proof-of-concept study on MAR-M247 derivates, a SEBM-re-melting procedure was developed, in which the energy density was successively decreased to mimic the layer-by-layer structure of AM. This allows characterization of the SEBM-processibility but limits mechanical testing. Therefore, a recrystallization study after hot and cold deformation of arc-melted material has been performed to obtain grain sizes more comparable to typical SEBM-processed microstructures. Especially the samples that underwent cold deformation show a promising, homogenous microstructure due to the prevention of dynamic recrystallization.
|High-Temperature Materials, Additive Manufacturing,