|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||Spatial Control of Solidification Microstructure in the Electron Beam Melting of Ti-6Al-4V
||Sneha Prabha Narra, Ross Cunningham, Daniel Christiansen, Jack Beuth, Anthony Rollett
|On-Site Speaker (Planned)
In this work, the relationships between prior beta grain size in solidified Ti-6Al-4V and melting parameters in the Arcam Electron Beam Melting (EBM) process are investigated. This knowledge has significant impact on in-situ control of solidification microstructure which aids in both process qualification and tailoring the part microstructure for different applications. Toward this goal, samples are built on Arcam equipment at Carnegie Mellon University by specifically varying the beam parameters - Arcam machine’s proprietary speed function and beam current. Prior beta grain widths are measured in deposited samples and they are compared to melt pool widths. The resulting understanding of the relationship between primary machine variables and prior beta grain widths is then used to demonstrate the control of solidification microstructure with location within a single deposit.
||Planned: A print-only volume