|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques II
||NOW ON DEMAND ONLY: Comparison of Benefits and Limitations of High Temporal Versus Low Temporal Resolution of In Situ In Operando AM Imaging of Superalloys
||Maureen Fitzpatrick, Yunhui Chen, Marta Majkut, Bratislav Lukic, Kudakwashe Jakata , Sebastian Marussi, Alexander Rack, Peter D. Lee
|On-Site Speaker (Planned)
As additive manufacturing (AM) finds importance in industries with stringent compliance regulations such as aerospace and biomedical, developing an understanding of the limitations of AM is critical for successful implementation of additive manufactured components. When superalloys undergo rapid melting with high power lasers, steep thermal gradients can introduce microstructural features which can be detrimental to product performance. These mechanisms occur on the scale of microseconds, which makes them difficult to characterise and therefore difficult to understand. Since the ESRF’s new upgrade, EBS, we are able to achieve ultrafast radiography of the build process with framerates reaching 200kHz. This high temporal resolution data allows us to study defect mechanisms that occur on short timescales while complementary lower temporal resolution data (1kHz framerate) yields information about the laser-matter interactions and the effects on the overall build. Pixel sizes of four microns were achieved, enabling observation of defects with fine spatial resolution.
||Additive Manufacturing, Characterization, Other