About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
A-15: Effects of Thermal Cycling on Microstructural Evolution in Ni-Mo-Al Single Crystals |
Author(s) |
Ruben Bladimir Ochoa, Adriana Eres-Castellanos, Gus Becker, Kamel Fezzaa, Jonah Klemm-Toole, Kester Clarke, Tresa Pollock, Amy Clarke |
On-Site Speaker (Planned) |
Ruben Bladimir Ochoa |
Abstract Scope |
A major drawback of metal additive manufacturing (AM) is the lack of understanding of microstructural evolution and control during the build process due to rapid solidification conditions. Local thermal conditions within AM parts favor the formation of columnar grains, which may lead to hot cracking and anisotropy. Thus, understanding solidification conditions associated with the interactions between multiple melt pools is crucial to controlling microstructural development. This work explores the relationship between melt pool interactions and thermal cycling on microstructural evolution in model Ni-Mo-Al single crystals. Solidification velocities of overlapping spot and raster melts were obtained by in-situ synchrotron x-ray radiography captured at the Advance Photon Source. Resulting microstructures can then be understood by coupling solidification velocities with simulated thermal gradients modeled using FLOW-3D. This work seeks to fundamentally develop an understanding between processing conditions and microstructural evolution. MURI and AUSMURI Collaborative Research. |
Proceedings Inclusion? |
Planned: |
Keywords |
Solidification, |