About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
A-30: Quantification of the Microstructure of Additively Manufactured Parts Utilizing Local Orientation Image Analysis |
Author(s) |
Sahar Beigzadeh, Jeffrey Shield |
On-Site Speaker (Planned) |
Sahar Beigzadeh |
Abstract Scope |
All additively manufactured (AM) parts have meltpool formation during solidification and dendritic microstructure because of the high thermal gradient and high cooling rate. By measuring the dendritic growth orientation inside each meltpool, it would be possible to differentiate the meltpool microstructures and analyze the related characteristics. For this aim, we used the “SkeletonOrientation” algorithm to analyze meltpool microstructures, allowing subtle variations in dendritic structures and orientations to be quantified. For example, we analyzed the dendritic microstructure of 300 maraging steel, printed using laser powder bed fusion. The dendritic growth directions have been measured for several meltpools and the results revealed that the dendrites inside each meltpool are mostly orientated in directions perpendicular to each other. The dendrite orientation misalignment was also observed to be dependent on build height, presumably related to the different cooling rates from the bottom to the top of the build. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Solidification, Other |