About this Abstract |
Meeting |
6th International Congress on 3D Materials Science (3DMS 2022)
|
Symposium
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6th International Congress on 3D Materials Science (3DMS 2022)
|
Presentation Title |
Quantitative Observation of Dendritic Growth in Metallic Alloys by Time-Resolve and In-situ Tomography |
Author(s) |
Takuya Kawarasaki, Taka Narumi, Tomohiro Takaki, Hideyuki Yasuda |
On-Site Speaker (Planned) |
Hideyuki Yasuda |
Abstract Scope |
Time-resolved in-situ tomography, using synchrotron radiation X-rays at SPring-8, were developed to observe dendritic growth in Al-based and Fe-based alloys. The voxel size of the reconstructed image was approximately 6.5 μm × 6.5 μm × 6.5 μm. The time resolution (duration of 360-deg rotation) was as short as 0.5 s for Al-Cu alloys and 4 s for Fe-C alloys. Evolution of dendrites were clearly observed in the reconstructed 3D images. However, the contrast and the signal-to-noise-ration needed to be improved to tack the solid-liquid interface and to evaluate the area and the curvature of the solid-liquid interface. A filter procedure using Phase Field model, which are used for simulation of dendritic growth, was developed. The interfacial area and the curvatures were evaluated as a function of solidification time. Some applications using the obtained 3D dataset are also demonstrated. |
Proceedings Inclusion? |
Definite: Other |